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• Schlenk flask
  ...hlenk flask''' (also called '''Schlenk tube''' or '''nitrogen round-bottom flask''') is a reaction vessel often used in air-sensitive chemistry or for stori ===Standard Schlenk flask===
  3 KB (503 words) - 03:54, 11 April 2019
• Büchner flask
  ...'side-arm flask''' or '''Kitasato flask''', is a thick-walled [[Erlenmeyer flask]] used in combination with a [[Büchner funnel]] and a vacuum source in vac ...ess risk of breaking the lateral tube, which would make a typical side-arm flask unusable. Some Büchner flasks have ground glass joint.
  2 KB (252 words) - 19:18, 29 January 2019
• Erlenmeyer flask
  ...:Petroleum_ether_in_Erlenmeyer_flask.jpg|thumb|300px|Wide mouth Erlenmeyer flask with [[petroleum ether]]]] ...amed '''conical flask''' or '''titration flask''', is a type of laboratory flask which features a flat bottom, a conical body, and a cylindrical neck. It is
  2 KB (317 words) - 17:16, 18 November 2019
• Volumetric flask
  [[File:100mL volumetric flask.jpg|thumb|200px|A 100 mL volumetric flask]] ...ed '''measuring flask''' or '''graduated flask''') is a type of laboratory flask, calibrated to contain a precise volume of liquid at a particular temperatu
  3 KB (430 words) - 08:04, 5 May 2018
• Round-bottom flask
  ...ottomed flask''', '''round bottom''') or '''RBF''' for short, is a type of flask with spherical bottom used as laboratory glassware, mostly often for synthe ...f the ground glass joint depends on the volume of the flask, for example a flask with a volume of 5 or 10 ml cannot have a 29/32 or 29/40 ground glass joint
  3 KB (510 words) - 19:20, 10 July 2023
• Florence flask
  ...:Florence flask with solution.jpg|thumb|300px|An old and worn out Florence flask]] A '''Florence flask''' or '''flat bottom flask''', is a type of flask used as an item of laboratory glassware to hold liquids.
  1 KB (215 words) - 14:29, 8 April 2019
• Fernbach flask
  A '''Fernbach flask''' or '''Fernbach culture flask''' is a type of flask suited for large volume cell culture where the culture requires a large sur ...ve a screw and plastic lid with an air membrane, to allow air to enter the flask, but prevent contamination.
  1 KB (152 words) - 23:28, 22 March 2020
• Kjeldahl flask
  The '''Kjeldahl flask''' is a [[round-bottom flask]] with a long wide neck that is used in the determination of nitrogen by Kj ...similar in appearance to a [[volumetric flask]] or a long neck [[Florence flask]]. Kjeldahl flasks are made of borosilicate glass.
  1 KB (156 words) - 13:37, 3 March 2018
• Vacuum flask
  ...engthens the time over which its contents remain hotter or cooler than the flask's surroundings. The vacuum flask consists of two flasks, placed one within the other and joined at the neck.
  2 KB (290 words) - 21:08, 4 March 2018
• Würtz flask
  A '''Würtz flask''' or '''Wurtz flask''' is a type of flask used in distillations. The flask consists of a [[round-bottom flask]] with a ground glass joint and long neck, from where a lateral tube emerge
  573 B (80 words) - 20:38, 6 June 2018
• Claisen flask
  ...k''' or '''Claisen distillation flask''' is a special type of distillation flask used in several procedures, like vacuum distillation. It was invented by Ra ...of the Claisen flask is a U-shaped neck fused on the top of the flask. The flask itself is often round-bottom or pear-shaped. The U-shape (or bifurcation) i
  1 KB (218 words) - 16:23, 19 March 2019

Page text matches

• Acetone
  ...tes lots of heat, which causes the products to evaporate from the reaction flask.
  8 KB (1,019 words) - 17:44, 1 January 2022
• Bromine
  ...nd sulfuric acid, which is risky, adding sulfuric acid to the bromine in a flask cooled in an ice bath can be much safer. Then separate using a separatory f
  14 KB (1,973 words) - 11:41, 25 June 2023
• Aluminium chloride
  ...d in airtight sealed containers, to prevent it from hydrolyzing. [[Schlenk flask]]s are often used or long term storage, and ampouling may also be used for
  6 KB (716 words) - 18:37, 7 February 2024
• Ammonia
  ...oluble gases in water and prevent water from rushing back into the heating flask. A pure, surfactant free solution of ammonia forms in the trap.
  11 KB (1,471 words) - 22:56, 24 August 2023
• Ammonium nitrate
  ...he chemicals should be added in dry form to a round-bottom or [[Erlenmeyer flask]] with a stopper and gas tubing ready to channel the ammonia. Upon the addi
  10 KB (1,381 words) - 21:26, 22 March 2023
• Cleaning glassware
  ...ulting steam will wash away any leftover lime. Tubes should be placed in a flask, also bottom up. This is not required if the glassware was rinsed previousl
  11 KB (1,909 words) - 21:41, 2 December 2018
• Diethyl ether
  <u>Attention</u>: do not spray the content of the can into a flask! This way, a lot of ether is lost (sciencemadness user Ave369 only distille ...of the fluid, then carefully inject the chilled fluid in the distillation flask using the can's long straw or another plastic straw, if the can doesn't com
  11 KB (1,652 words) - 07:51, 16 May 2024
• Diisopropyl ether
  ...d with a well greased stopcock, held in place with a clamp. Keep the ether flask in a safe place.
  6 KB (711 words) - 20:05, 9 November 2018
• Distillation
  ...difference causes it to condense into a liquid and drip into the receiving flask. Simple distillation is used when the components being separated have a lar
  3 KB (472 words) - 18:49, 22 July 2023
• Ethanol
  ...t the dry ethanol in a ground glass joint glass flask, like a round bottom flask and seal it using a well greased plug or [[stopcock]].
  14 KB (1,953 words) - 20:56, 9 September 2023
• Glassware
  100mL volumetric flask.jpg|A 100 mL volumetric flask ===[[Erlenmeyer flask]]s===
  13 KB (1,961 words) - 21:49, 1 May 2019
• Methyl formate
  ...ow boiling point, methyl formate may bump if the heating element heats the flask too much, unless you have very good temperature control. The resulting dist
  6 KB (769 words) - 18:41, 9 July 2023
• Nitromethane
  ...next, leaving the castor oil and other high boiling point fractions in the flask (vacuum distillation can be benefitial at this point as it prevents thermal
  10 KB (1,375 words) - 20:01, 16 May 2023
• Polytetrafluoroethylene
  ...l stirrer adapter, [[reaction vessel]], [[reagent bottle]], [[round-bottom flask]], sampler/ladle, scoop, [[stirring rod]], [[stopcock]], [[stopper]], [[tes
  7 KB (880 words) - 19:29, 16 October 2022
• Phosphoric acid
  ...sing phosphoric acid without damaging glassware that can exit the reaction flask in gaseous form below this temperature.
  9 KB (1,223 words) - 00:12, 29 March 2020
• Proper disposal of chemicals
  ...s and salts. However, as the carbonate is formed, it will creep out of the flask, covering it. For quicker results, alkali bases can be neutralized with any
  347 KB (46,057 words) - 20:09, 13 March 2024
• Oxalic acid
  ...ion subsides, add the hot solution into an evaporating basin. Wash out the flask with 10 ml of conc. nitric acid and evaporate the solution on the water bat
  8 KB (1,006 words) - 15:03, 18 November 2023
• Petroleum ether
  ...ether_in_Erlenmeyer_flask.jpg|thumb|300px|Petroleum ether in an Erlenmeyer flask.]]
  3 KB (391 words) - 21:07, 2 February 2020
• Preparing solutions
  ...available equipment. It is best to prepare molar solutions in [[volumetric flask]]s, although graduated cylinders will also work if volumetric flasks are no * Add the solute to the proper size of volumetric flask or graduated cylinder ''before'' adding the solvent using a powder funnel t
  6 KB (1,081 words) - 21:36, 25 April 2019
• Synthesis of salicylic acid
  ...er on top of a hot plate or other heating source, and place a round-bottom flask full of ice water on top of the beaker. Reflux for 30 minutes at 100 °C. 4- Add some sulfuric acid to the reaction flask. A white solid should form. Add sulfuric acid until no more solid forms.
  7 KB (1,088 words) - 20:32, 28 July 2015
• Tin(IV) chloride
  ...unks of tin, although higher surface area tin powder would react faster. A flask containing sodium hydroxide is used to absorb excess chlorine gas that does
  7 KB (954 words) - 18:13, 7 June 2023
• Sulfuric acid
  ...r-cooled condenser. Put thermal insulation ([[asbestos]], rockwool) on the flask and start heating it. Discard the first few grams of the distillate, until ...ed with water to regenerate nitric acid, and then re-added in the reaction flask, to further oxidize the sulfur dioxide. Any nitric oxide produced from the
  27 KB (4,285 words) - 21:31, 9 September 2023
• Trimethyl borate
  [[File:Trimethyl borate igniting in a volumetric flask|thumb|right|335 px]]
  6 KB (707 words) - 19:50, 9 September 2021
• Improvisation
  ===[[Vacuum flask|Dewar]]=== ...sperse a gas in a liquid, best if said liquid is in a beaker or Erlenmeyer flask. A PTFE tube can be used to connect to the glass bubbler, as it is chemical
  21 KB (3,515 words) - 21:18, 20 March 2023
• Sodium
  ...odium metal either directly from the flask or just dump the content of the flask in a dish and remove the sodium from the slag this way. The sodium pieces a
  16 KB (2,327 words) - 18:19, 29 August 2021
• Reflux setups
  ...heating source beneath the beaker and a cold surface, often a round-bottom flask of ice and water on top. Despite being such a simple setup, this reflux sys ...ed, a wide (~0.75 to 1.25 cm) glass tube can be attached to the top of the flask. In this set-up, it is assumed that the length of the condenser or tubing w
  2 KB (397 words) - 18:48, 22 July 2023
• Chlorobutanol
  ...high heat and allowing it to deposit in crystal form on the underside of a flask of ice-water.
  5 KB (655 words) - 07:29, 14 February 2021
• Condenser
  ...lask of cold water on top of a beaker, a more efficient method is to use a flask with a condenser attached directly to the top. ...osited on the surface of the cold finger where it sticks. In many cases, a flask of cold water placed on a beaker would work as an easy improvised solution,
  7 KB (1,085 words) - 18:52, 25 February 2018
• Chromium(III) oxide
  ...xidation of ammonia to nitric oxide when heated to red heat and put into a flask of ammonia gas.
  5 KB (622 words) - 03:08, 23 August 2021
• Copper
  *[http://www.sciencemadness.org/talk/viewthread.php?tid=62936 500 ml copper flask]
  16 KB (2,353 words) - 12:11, 25 June 2023
• Cryohol
  ...mos flask. It releases carbon dioxide gas, so make sure not to stopper the flask completely.
  1 KB (189 words) - 21:36, 2 December 2018
• Glauber's nitric acid synthesis
  # Put the saltpeter in your boiling flask or retort. # Pour the acid into your boiling flask or retort.
  4 KB (709 words) - 15:57, 12 January 2018
• Zinc chloride
  ...et inside the container. For storage of very pure zinc chloride, a Schlenk flask should be used.
  5 KB (615 words) - 21:40, 8 August 2020
• Glauber's hydrochloric acid synthesis
  ...ed to the neck of the receiving flask, the quicker lowers the water in the flask, letting air in and stopping the [[suck back]]. If you use a modern setup with a flask and thin glass tubing, use a [[Funnel-and-beaker trap|funnel trap]] to prev
  4 KB (600 words) - 20:58, 26 December 2022
• Hydrogen iodide
  ...d white [[phosphorus]]. 11 parts (by weight) of iodine is added in a small flask, and 1 part of dried white phosphorus is slowly added. The reaction takes p ..., under stirring. The iodine solution was continuously added in the second flask over a period of 2 hours, while keeping the temperature to 200°C. The resu
  7 KB (872 words) - 23:09, 28 March 2020
• Chemical garden
  First, prepare a solution of sodium silicate in a large flask, best with a perfectly flat bottom. Large crystals of a transition metal sa
  4 KB (515 words) - 22:03, 3 April 2020
• Distillation apparatus
  Simple distillation is a process in which vapors from the boiling flask are directly fed into the condenser. This process is primarily used to sep [[Flask]]s are commonly used for both the boiling vessel and receiver. Several type
  6 KB (1,000 words) - 17:46, 26 December 2022
• Boiling the Bat
  Step first involves pouring the Bat in a flask and boiling it, preferably with boiling chips. For the most part, water wil ...ute sulfuric acid, thwarting any possible damage done by them. The boiling flask should be insulated with asbestos cord, to prevent refluxing of sulfuric ac
  3 KB (498 words) - 20:25, 27 March 2023
• Heating mantle
  *Uniform heating of the flask ...baths, using a heating mantle generates no liquid residue to drip off the flask.
  4 KB (628 words) - 21:05, 11 May 2019
• Synthesis of potassium trisoxalatoferrate(III) trihydrate
  * Büchner funnel with filter paper, hooked up to a Büchner flask
  3 KB (427 words) - 19:27, 21 February 2016
• Laboratory
  ...ainers, ranging from simple bottles, through beakers, conical [[Erlenmeyer flask|flasks]], round flasks, even long-necked quantitative measuring flasks. ...conic lab glassware is the distillation apparatus, consisting of a boiling flask and a [[condenser]], of which there are many types. [[Separatory funnel]]s
  7 KB (1,109 words) - 17:13, 10 February 2019
• Ammonium formate
  ...ate shaped like snowflake arms or fern leaves will form on the edge of the flask.
  5 KB (683 words) - 18:02, 28 May 2020
• Chromyl chloride
  ...hazard symbol, away from any moisture or organic compounds. A round bottom flask with a glass stopper can be used. Inspect it periodically to make sure ther
  6 KB (808 words) - 20:08, 16 October 2022
• Lab accident
  ===Vacuum flask rupture=== Another type of accident occurs when a liquid nitrogen cooled vacuum flask/trap is removed from the vacuum pump and rapidly warmed. The thermal shock
  6 KB (992 words) - 20:47, 9 September 2023
• Filtration
  ...dness.org/talk/viewthread.php?tid=12535 Vacuum filtration without a vacuum flask.]
  3 KB (467 words) - 21:24, 2 December 2018
• Reagent bottle
  Round bottom flasks or [[Schlenk flask]]s are often used for storing air or water sensitive compounds, when an ade ...ttle, it's a good idea to weight it empty and write down the weight of the flask, best on the reagent bottle itself. Just make sure the bottle isn't damaged
  9 KB (1,411 words) - 14:43, 26 November 2022
• Hydrogen cyanide
  Adding a dilute acid to [[Prussian blue]] and heating the flask will also yield hydrogen cyanide gas. However, the yield is variable, gener
  10 KB (1,464 words) - 12:40, 26 January 2024
• Hydrogenator
  ...drides or Raney nickel and a glass container, such as Erlenmeyer or filter flask, and certain catalysts.
  3 KB (462 words) - 16:37, 2 January 2022
• Potassium rhodizonate
  In a beaker or round bottom flask add 10 g of [[inositol]] and 25 ml of [[nitric acid]] 68%. The mixture is r
  5 KB (577 words) - 16:05, 24 April 2017
• Phosphorus trichloride
  Phosphorus trichloride should be stored in [[Schlenk flask]]s, as they're the best storage containers for air and water sensitive reag
  9 KB (1,123 words) - 21:14, 22 October 2022
• Sodium methoxide
  ...lves. After it dissolved, add 100 g of dried 3A molecular sieves. Seal the flask, mark the methanol level and wait a few days. After the level of the methan
  6 KB (759 words) - 20:55, 10 October 2019
• Phosphoryl chloride
  Phosphoryl chloride should be stored in [[Schlenk flask]]s, as they're the best storage containers for air and water sensitive reag
  6 KB (750 words) - 09:43, 15 August 2022
• Benzaldehyde
  ...o it and continue refluxing for at least 15-20 min. After this, remove the flask from the bath and let it cool to room temp. You should see two layers, the ...and benzaldehyde free. You may need to add more water to the distillation flask to aid in the steam distillation.
  12 KB (1,637 words) - 21:45, 25 July 2022
• Plasticware
  ===[[Erlenmeyer flask]]=== Used for handling solids and, as their name suggests, add them to a flask or bottle.
  7 KB (1,092 words) - 20:41, 2 October 2022
• Sodium cyanide
  ...NaCN into Prussian blue, then add conc. sulfuric acid and gently heat the flask to distill the resulting HCN and bubble it in a cooled alcoholic solution o
  10 KB (1,481 words) - 13:28, 10 July 2022
• Phthalic anhydride
  ...ide. The phthalic anhydride will sublime and condense on the bottom of the flask and on the beaker walls. The crystals appear as cotton candy. When a suffic
  7 KB (915 words) - 13:19, 29 August 2020
• Magnetic stirrer
  ...agnet from outside the flask to draw the stir bar through the walls of the flask and drag it to the vessel opening. Do not use very strong magnets, as if th
  7 KB (1,222 words) - 14:17, 18 August 2020
• Schlenk flask
  ...hlenk flask''' (also called '''Schlenk tube''' or '''nitrogen round-bottom flask''') is a reaction vessel often used in air-sensitive chemistry or for stori ===Standard Schlenk flask===
  3 KB (503 words) - 03:54, 11 April 2019
• Antimony(III) chloride
  ...up the reaction. The aq. acid is removed via distillation, leaving in the flask impure SbCl₃, which can be purified by distilling it using a [[s ...stored in dry air-tight containers, best in an inert atmosphere. [[Schlenk flask]]s are a common storage container. Ampouling is used for long term storage.
  6 KB (803 words) - 12:58, 18 December 2022
• Ultrasonic cleaner
  ...he agitation produces high forces on contaminants adhering to walls of the flask.<ref>https://en.wikipedia.org/wiki/Ultrasonic_cleaning</ref>
  2 KB (248 words) - 15:55, 24 July 2018
• Syringe
  ...ve or even pyrophoric chemicals from their storage bottles to the reaction flask.
  4 KB (627 words) - 16:57, 3 December 2018
• Rubberware
  ===Flask stand=== ===[[Hot hand protector|Flask holder]]===
  4 KB (625 words) - 21:02, 20 April 2020
• Cold trap
  ...adding a gas wash bottle or a similar tube with an air intake adapter in a flask containing a cooling bath. Since borosilicate glass will not survive repeat
  2 KB (307 words) - 22:21, 27 January 2018
• Wash bottle
  ...e various pieces of laboratory glassware or to precisely fill [[volumetric flask]]s and other flasks.
  2 KB (335 words) - 18:43, 25 October 2020
• Metalware
  ...ve or even pyrophoric chemicals from their storage bottles to the reaction flask. Syringe needles are almost always made of stainless steel. ...pinch clamp are commonly used in holding the rotary evaporator collecting flask, as well as holding the filtration tube and fritted glass disk from filtrat
  13 KB (2,034 words) - 08:43, 5 May 2019
• Heating bath
  ...is a heat transfer setup which is designed to transfer heat to a reaction flask, by using a liquid or powdered medium. Heating baths are often used in comb ...purpose of the fluid bath is to give an homogenous heating of the reaction flask as well as maintaining a constant temperature.
  5 KB (799 words) - 22:10, 2 August 2020
• Peroxide forming chemicals
  ...roxide test:''' 8 mL potassium iodide-starch reagent are placed in a 12 mL flask/test tube and filled up to the top with the ether that should be tested. If
  13 KB (1,730 words) - 14:06, 9 August 2023
• Heat gun
  ...ww.sciencemadness.org/talk/viewthread.php?tid=64178 Heating a round bottom flask with a hotplate?]
  2 KB (296 words) - 21:20, 29 June 2019
• Rotary evaporator
  *A motor unit that rotates the evaporation flask containing the solvent/solution. *A condensate-collecting flask at the bottom of the condenser, to catch the distilling solvent after it re
  2 KB (356 words) - 20:10, 27 March 2017
• Woodware
  ...cedar, ash, oak, while special wood like cork tends to be used mostly for flask holders or pin boards. ...onstrations to indicate the flammability or oxidizing power of gasses in a flask.
  5 KB (710 words) - 22:36, 29 April 2019
• Burette
  ...he solution. Filling the burette is done by pumping air inside the burette flask by squeezing a small bulb pump and covering the lower air vent with your fi
  2 KB (253 words) - 18:21, 11 December 2018
• Automatic burette
  ...ck inside the flask directly, without having to remove it by hand from the flask and empty it through the main tap. *Remove the burette from the flask and carefully place it on a table.
  5 KB (779 words) - 22:25, 8 November 2018
• Schlenk line
  To create an inert atmosphere inside a glass installation or flask, do the following:
  5 KB (808 words) - 19:58, 24 August 2017
• Pipette
  ...the bulb, being calibrated for a single volume (similar to a [[volumetric flask]]). his type of pipette allows the user to measure a volume of solution ext
  2 KB (362 words) - 22:06, 10 March 2018
• Ammonium dinitramide
  ...6 ml fuming nitric acid and 26.4 ml conc. sulfuric acid are added, and the flask is cooled to -40 °C. The stirring is turned on, and the dry potassium sulf
  7 KB (923 words) - 16:56, 19 November 2018
• Potassium tert-butoxide
  ...tert''-butoxide should be kept in dry air-tight containers, like [[Schlenk flask]]s or [[desiccator]]s.
  5 KB (534 words) - 20:21, 17 September 2022
• Titanium(IV) chloride
  Titanium tetrachloride must be kept in air-tight containers. [[Schlenk flask]]s can be used, though most often TiCl₄ is kept in dark amber bo
  5 KB (622 words) - 21:01, 5 June 2021
• Bismuth chloride
  Bismuth chloride should be kept in air tight containers. [[Schlenk flask]]s filled with argon are ideal for storage.
  5 KB (572 words) - 15:50, 30 June 2020
• Sodium amide
  Sodium amide should be stored in air-tight containers, like [[Schlenk flask]]s, under inert gas, like [[argon]] and absolutely away from moisture. Ampo
  5 KB (631 words) - 01:20, 30 August 2020
• Grignard reagent
  *Add the magnesium flakes/powder in the reaction flask and a stir bar; a stir bar should also be added in one or both dropping fun ...ass joint and use a syringe or cannula to inject the ether in the reaction flask
  6 KB (857 words) - 14:37, 1 April 2019
• Lithium hydride
  ...ir-tight containers, in an inert atmosphere, away from moisture. [[Schlenk flask]]s are good storage containers.
  6 KB (710 words) - 09:52, 20 February 2022
• Blanc reaction
  ...olution or in the form of paraformaldehyde, followed by zinc chloride. The flask is heated on a [[hot plate]] or some other [[heating bath]]. [[Hydrogen chl
  1 KB (214 words) - 18:52, 5 July 2019
• Benzyl chloride
  ...solution of [[sodium chloride]]. Pour the benzyl chloride layer in another flask and dry it using a drying agent like [[calcium chloride]] or [[magnesium su ...te the reaction, but once it starts, there's no need to further expose the flask to strong light, unless your goal is to continue the reaction.<ref>http://w
  8 KB (1,110 words) - 21:27, 7 November 2021
• Soxhlet extractor
  *Add the extraction solvent in the distillation flask ...is preferred over a mantle because pyrolysis may occur on the sides of the flask when the solvent level drops)
  5 KB (791 words) - 22:04, 2 August 2020
• Birch reduction
  In a reaction flask cooled to very low temperature using dry ice and acetone or EtOH and liq. N
  2 KB (279 words) - 17:24, 12 March 2018
• Separatory funnel
  ...he first layer in a flask, or the second, depending on which you need in a flask
  5 KB (763 words) - 16:27, 17 August 2020
• Dropping funnel
  ...e, or some other means to equalize the pressure between a sealed receiving flask and the bulb of the funnel, the flow of fluid from the bulb will rapidly co *Place the dropping funnel on the flask in its respective socket
  5 KB (882 words) - 20:50, 13 May 2021
• Gas washing bottle
  ...ose primary use is to inject a stream of gas through a liquid, in a closed flask. ...rom one side, taking a 90° angle and extends until near the bottom of the flask, while the other is connected directly to the stopper. Some special types o
  2 KB (345 words) - 21:59, 8 April 2018
• Leuckart reaction
  ...y temperature and maintain it for a few hours until completion. Remove the flask and extract the amine. ...ydes or ketones, you will need to add the ammonium formate in the reaction flask first and heat it until it melts. Using a dropping funnel, slowly add the k
  3 KB (467 words) - 18:52, 11 February 2020
• Büchner funnel
  ...th a [[Büchner flask|side-arm flask]] (also known as Büchner or Kitasato flask) when doing vacuum filtration, though if vacuum adapters are used, ordinary
  4 KB (584 words) - 18:03, 26 September 2022
• Büchner flask
  ...'side-arm flask''' or '''Kitasato flask''', is a thick-walled [[Erlenmeyer flask]] used in combination with a [[Büchner funnel]] and a vacuum source in vac ...ess risk of breaking the lateral tube, which would make a typical side-arm flask unusable. Some Büchner flasks have ground glass joint.
  2 KB (252 words) - 19:18, 29 January 2019
• Keck clip
  ...old glass together that will get this hot. Typical problem areas include a flask over the plate (which may drop off the end of the column as it gets hot) an
  4 KB (634 words) - 20:06, 16 November 2020
• Erlenmeyer flask
  ...:Petroleum_ether_in_Erlenmeyer_flask.jpg|thumb|300px|Wide mouth Erlenmeyer flask with [[petroleum ether]]]] ...amed '''conical flask''' or '''titration flask''', is a type of laboratory flask which features a flat bottom, a conical body, and a cylindrical neck. It is
  2 KB (317 words) - 17:16, 18 November 2019
• Zamak
  ...emical reactions, expect plenty of side products to appear in the reaction flask, as many zamak alloys may also contain other elements, especially if it's l
  4 KB (591 words) - 16:05, 6 October 2019
• Volumetric flask
  [[File:100mL volumetric flask.jpg|thumb|200px|A 100 mL volumetric flask]] ...ed '''measuring flask''' or '''graduated flask''') is a type of laboratory flask, calibrated to contain a precise volume of liquid at a particular temperatu
  3 KB (430 words) - 08:04, 5 May 2018
• Round-bottom flask
  ...ottomed flask''', '''round bottom''') or '''RBF''' for short, is a type of flask with spherical bottom used as laboratory glassware, mostly often for synthe ...f the ground glass joint depends on the volume of the flask, for example a flask with a volume of 5 or 10 ml cannot have a 29/32 or 29/40 ground glass joint
  3 KB (510 words) - 19:20, 10 July 2023
• Beaker
  ...tents, but allowing venting via the spout. Alternatively, a [[round-bottom flask]] may be used. *Convenient reaction flask for simple or tricky reactions
  3 KB (440 words) - 23:42, 27 November 2020
• Graduated cylinder
  ...o that of [[beaker]]s. Like [[volumetric pipette]]s and [[volumetric flask|flask]]s, graduated cylinders come in two main classes: A and B.
  2 KB (316 words) - 16:49, 13 June 2019
• Funnel
  ...just don't want your funnel to wobble when you pour solids or liquids in a flask.
  2 KB (268 words) - 15:04, 5 May 2019
• Cork ring
  ...f cork or a similar material, often used in labs to support [[round-bottom flask]]s and similar glassware or items that cannot be safely placed on a flat su ...ring is that of a right trapezoid-like pentagon, which gives the spherical flask a better stability than if a simple circular disk with rectangular section
  3 KB (517 words) - 21:22, 8 June 2023
• Pycnometer
  ...t of thermal expansion, to limit the effects of ambient temperature on the flask. It has a close-fitting ground glass stopper with a capillary tube through *[[Volumetric flask]]
  4 KB (665 words) - 23:30, 10 December 2020
• Extraction thimble
  ...ting away and clogging the siphoning tube or ending up in the distillation flask.
  2 KB (228 words) - 19:03, 11 October 2022
• Weighing bottle
  ...k with ground glass joint as weighting bottle. A 50 or 100 ml [[Erlenmeyer flask]] with a 19/24 or 24/29 ground glass joint can be a good replacement.
  1 KB (225 words) - 14:35, 7 April 2019
• Cold finger
  ...glass joint, which allows them to be fitted to a specially designed vacuum flask, which is then connected to a LN2 trap and a vacuum pump.
  1 KB (213 words) - 14:58, 7 June 2018
• Retort
  ....sciencemadness.org/talk/viewthread.php?tid=11263 Distillation: retort vs. flask + condenser]
  2 KB (298 words) - 20:43, 25 February 2018
• Florence flask
  ...:Florence flask with solution.jpg|thumb|300px|An old and worn out Florence flask]] A '''Florence flask''' or '''flat bottom flask''', is a type of flask used as an item of laboratory glassware to hold liquids.
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• Dean-Stark apparatus
  ...turns sharply downward, so that the side-arm is connected to the reaction flask by a vertical tube. ...the cylinder tube. The heavier phase will siphon back in the distillation flask, while the lighter phase will accumulate in the cylinder. NurdRage made a [
  5 KB (775 words) - 08:37, 23 September 2023
• Fernbach flask
  A '''Fernbach flask''' or '''Fernbach culture flask''' is a type of flask suited for large volume cell culture where the culture requires a large sur ...ve a screw and plastic lid with an air membrane, to allow air to enter the flask, but prevent contamination.
  1 KB (152 words) - 23:28, 22 March 2020
• Powder addition funnel
  ...F''') is a type of lab glassware used to add powdered solids in a reaction flask, often under inert atmosphere. Its function is similar to that of [[droppin *Place the greased male joint on the reaction flask and secure it with a keck clip;
  5 KB (831 words) - 07:44, 22 July 2019
• Vacuum filtration
  ...separate solids from liquids using the difference of pressure between the flask and outside atmosphere as filtration force. *Vacuum flask with inlet tube (optional) or [[cold trap]]
  2 KB (248 words) - 18:19, 17 April 2019
• Conical rubber seal
  ...on]] to act as sealant when creating vacuum in the [[Büchner flask|filter flask]].
  1 KB (177 words) - 20:44, 22 August 2020
• Thistle tube
  ...are poured in the bulb section and then are allowed to freely flow in the flask.
  2 KB (296 words) - 15:42, 24 September 2019
• Kjeldahl flask
  The '''Kjeldahl flask''' is a [[round-bottom flask]] with a long wide neck that is used in the determination of nitrogen by Kj ...similar in appearance to a [[volumetric flask]] or a long neck [[Florence flask]]. Kjeldahl flasks are made of borosilicate glass.
  1 KB (156 words) - 13:37, 3 March 2018
• Stopcock
  ...l]]s, [[gas collecting tube]], [[gas syringe]], [[Imhoff cone]], [[Schlenk flask]]s/[[Schlenk line|lines]], [[separatory funnel]]s, various [[adapter]]s.
  2 KB (291 words) - 21:34, 7 April 2019
• Fleaker
  ...e described as a cross between the Griffin [[beaker]] and the [[Erlenmeyer flask]].
  1 KB (184 words) - 17:00, 5 March 2019
• Volumetric pipette
  ...type of pipette calibrated for a single volume (similar to a [[volumetric flask]]). *[[Volumetric flask]]
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• Vacuum flask
  ...engthens the time over which its contents remain hotter or cooler than the flask's surroundings. The vacuum flask consists of two flasks, placed one within the other and joined at the neck.
  2 KB (290 words) - 21:08, 4 March 2018
• Adapter
  ...one bent at 105°, which is used to connect the condenser to the receiving flask. Some have a vacuum hose adapter. Used in combination with a Kjeldahl flask during the Kjeldahl test.
  7 KB (1,092 words) - 15:56, 25 June 2019
• Cannula transfer
  ...m or negative pressure: Relies on creating a low pressure in the receiving flask. *Pressure or positive pressure: High pressure is created in the transferring flask. This method is more commonly used, as it's safer;
  3 KB (453 words) - 20:15, 2 October 2022
• Abderhalden's drying pistol
  *A jacketed tube flask, with a main female ground glass joint and two smaller ones on opposite sid *A bent pear-shaped Schlenk flask with a gas stopcock tube which goes in the same direction as the ground gla
  1 KB (214 words) - 20:23, 18 April 2019
• Short-path distillation apparatus
  ...dapter and a long thin tube, where the distillate flows into the receiving flask or in a cow adapter, which transfers it to other flasks. ...ness.org/talk/viewthread.php?tid=70591 Short-path distillation head, three-flask cow, drying tube, and 10 flasks, all 14/20, $80 + $12 S&H on eBay]
  2 KB (332 words) - 15:16, 31 January 2019
• Ground glass joint
  Often encountered in [[rotary evaporator]]s, in the distillate collecting flask. Doesn't require greasing.
  2 KB (343 words) - 18:35, 11 March 2018
• Reaction vessel
  ...er types have a stopcock on the bottom of the flask, to drain the reaction flask. [[Schlenk flask]]s are sometimes called reaction vessels, though their use is different fro
  2 KB (280 words) - 20:08, 19 January 2020
• Bumping
  ...violent the liquid from splashing all over the flask or even rupturing the flask.
  2 KB (344 words) - 17:42, 21 September 2018
• Lab tips & tricks
  ...onnect a 3-way distillation connecting adapter with same size joint to the flask, then attach a small female stopper to the side arm and a Liebig condenser *Pre-weight your bottle or flask, that way you can calculate the weight of your reagent without having to tr
  13 KB (2,315 words) - 17:30, 26 September 2022
• Würtz flask
  A '''Würtz flask''' or '''Wurtz flask''' is a type of flask used in distillations. The flask consists of a [[round-bottom flask]] with a ground glass joint and long neck, from where a lateral tube emerge
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• Surgical instrument
  Good when searching in hard to reach places, dark areas, or in stuck reaction flask if possible.
  5 KB (721 words) - 17:35, 22 June 2019
• Lead ring
  ...ask weight''', '''lead ring flask weight''', '''weight rings''' or just '''flask weight''' is a type of weight used to hold steady flasks in a water bath.
  1 KB (173 words) - 15:07, 26 November 2022
• Caffeine
  ...over the DCM via distillation. After all the DCM has been removed from the flask, it is transferred in another beaker, where hot water is added until it com
  7 KB (810 words) - 19:20, 30 December 2023
• Iron ring
  ...aces, such as [[funnel]]s, [[Imhoff cone]]s, sometimes even [[round-bottom flask]]s.
  2 KB (274 words) - 20:58, 5 September 2018
• Stir bar retriever
  ...then slowly move the magnet with the stir bar until you get it out of the flask.
  2 KB (281 words) - 20:33, 9 June 2018
• Stir bar
  *Oval stir bar: used in [[round-bottom flask]]s
  3 KB (507 words) - 15:05, 10 June 2018
• Claisen flask
  ...k''' or '''Claisen distillation flask''' is a special type of distillation flask used in several procedures, like vacuum distillation. It was invented by Ra ...of the Claisen flask is a U-shaped neck fused on the top of the flask. The flask itself is often round-bottom or pear-shaped. The U-shape (or bifurcation) i
  1 KB (218 words) - 16:23, 19 March 2019
• Dimethyl dioxane
  ...e distillate using a [[separatory funnel]], then transfer the ether into a flask. To destroy all impurities, you cannot use acid, like in the case of dioxan
  7 KB (865 words) - 16:40, 4 September 2019
• Alcohol catalyzed alkali metal production
  ...dded to the mixture. A reflux condenser is connected to the flask, and the flask is heated to 230 °C. A tertiary alcohol is used as catalyst, only 1.2 ml a ...it, allowing better separation. A condenser is connected to the flask. The flask is heated to around 200 °C, and 1.2 ml of [[tert-Amyl alcohol|''tert''-amy
  18 KB (2,804 words) - 20:34, 17 September 2022
• Iodometry
  ...[[iodine]] take some time, reaction mixture is kept in closed ground joint flask to prevent [[iodine]] sublimation. Strong light, ass well as certain ions l ...o add dry ice to the titration mixture to displace air from the Erlenmeyer flask so as to prevent the aerial oxidation of iodide to iodine. Standard iodine
  5 KB (842 words) - 18:01, 6 September 2022
• Karl Fischer titration
  ...ted using a [[syringe]] and [[needle]] instead of using a [[burette]]. The flask should have a [[drying tube]] to allow the pressure to equalize without all
  10 KB (1,556 words) - 18:24, 17 April 2019
• Thermochemical dioxane approach
  ...odium metal either directly from the flask or just dump the content of the flask in a dish and remove the sodium from the slag this way. The sodium pieces a ...inated when the entire aggregate is immersed under dioxane and placed in a flask with a ground glass stopper. The yield of this procedure is not great, only
  7 KB (1,049 words) - 20:06, 5 November 2022
• Cannula
  ...it may be inserted into a flask via two septa (one on the tube, one on the flask). Used this way, needle tip fires are eliminated, reducing the obvious haza
  4 KB (622 words) - 19:53, 21 April 2020
• Silver(I) fluoride
  ...to [[silver carbonate]] or [[silver(I) oxide]], in a PE or PTFE beaker or flask.
  5 KB (610 words) - 00:11, 31 December 2021
• Hot hand protector
  '''Hot hand protectors''', also called '''flask holders''', or just '''hot hands''' is a piece of lab equipment used by che
  693 B (98 words) - 00:02, 23 March 2019
• Keg
  *Test tube/flask holder
  1 KB (218 words) - 12:01, 5 May 2019
• Fermentation tube
  A simple fermentation tube can be made by inserting a tube in a flask filled with liquid.
  952 B (147 words) - 12:57, 15 August 2019
• Screw connector
  ...m adapters. Other type of screw adapters are sometimes used for [[Büchner flask]]s that lack the vacuum hose barb.
  1 KB (159 words) - 20:09, 23 July 2019
• Dropping bottle
  ...ll bottle with a ground glass joint, and a damaged stopper, like a Winkler flask for example, simply carve a small slit along the ground glass joint, which
  2 KB (289 words) - 21:25, 13 January 2024
• Regulatory quirks
  ===[[Erlenmeyer flask]] (CORRECTED)=== ...rance, like [[Florence flask]]s, [[fleaker]]s or [[Büchner flask|side-arm flask]]s.
  44 KB (6,991 words) - 19:37, 8 January 2024
• Aminoguanidinium bicarbonate
  ...oved, it filtered fairly easily. The yellow colored filtrate is put into a flask with magnetic stirring, and 8.57 g of 25% ammonia solution (126 mmol, 0.66
  7 KB (851 words) - 10:04, 7 May 2021
• Acetamidine hydrochloride
  ...ground up in a mortar under absolute ethanol, before being returned in the flask.
  6 KB (730 words) - 19:47, 28 December 2023
• Phenylacetic acid
  ...Grignard reagent]]-grade [[magnesium]] flakes) in a dry and inert reaction flask with dry [[carbon dioxide]]. This yields very pure phenylacetic acid, thoug
  8 KB (1,054 words) - 15:20, 17 August 2022
• Nitrosonium tetrafluoroborate
  In closed airtight bottles, at low temperature, in a dry medium. Schlenks flask may also be used if available.
  7 KB (765 words) - 19:25, 31 December 2020
• Aluminium iodide
  Anhydrous AlI₃ should be kept in airtight vessels. [[Schlenk flask]]s are a good storage medium.
  6 KB (800 words) - 13:19, 18 November 2023
• Boron trichloride
  In airtight bottles, in a cold place, away from moisture. [[Schlenk flask]]s can be used, but it must be kept in a cold place. Usually, a passivated
  5 KB (597 words) - 21:11, 22 October 2022
• Suck back
  ...e suddenly pulled into it, due to the creation of a vacuum in the enclosed flask.<ref>https://issr.edu.kh/science/Webpage/Lab_Techniques/Edexcel%20Practical *Physical cause: A closed flask with a single delivery tube, like an enclosed [[test tube]] with a single g
  3 KB (402 words) - 16:15, 2 January 2023
• Copper(I) acetylide
  ...ot explosive and leaves copper metal as a fine powder at the bottom of the flask, while depositing a fluffy very fine carbon powder on the walls. On the bas
  5 KB (628 words) - 21:02, 2 June 2023
• Kolbe nitrile synthesis
  *In a reaction flask, the alkyl halide is added, along with the metal cyanide. *The dry solvent is added in the flask, along with a stir bar;
  3 KB (522 words) - 18:44, 11 March 2024