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  • ==Preliminary glass cleaning== ...uch as sodium sulfate or bicarbonate. Using anything harder will erode the glass.
    11 KB (1,909 words) - 21:41, 2 December 2018
  • ...g vapour reacts with atmospheric air, depositing solid sulfur in the glass joints, fusing them together.
    5 KB (588 words) - 20:42, 22 November 2020
  • ...orine compounds, like fluorine interhalogens. There are different types of glass that can be used for making lab glassware that are good for different purpo ...is necessary to close a beaker to prevent evaporation of contents, a watch glass of the proper size may be placed over the top, although this will not close
    13 KB (1,961 words) - 21:49, 1 May 2019
  • ...try to distill it in apparata that contain rubber parts. Use ground glass joints or a retort when distilling nitric acid, especially of fuming concentration ...centrations of nitric acid are light sensitive and should be kept in amber glass bottles with ample headroom to prevent pressure build up from nitrogen oxid
    12 KB (1,686 words) - 11:53, 23 September 2023
  • ...ed rubber stopper). If a condenser is not owned, 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 ...sed for more efficient and well-contained refluxes. These use ground glass joints to ensure no gas can escape through the joint, it all must travel through t
    2 KB (397 words) - 18:48, 22 July 2023
  • ...rubber stoppers and glass tubes; however, in modern practice, ground glass joints are far more common due to their versatility and ease of use. ...ottom flasks with side arms, used with old condensers with no ground glass joints. The side arm is connected with the condenser through a rubber bung. These
    6 KB (1,000 words) - 17:46, 26 December 2022
  • ...storing various chemical reagents, usually because plastic is lighter than glass and will not shatter if dropped on the floor. ...etc. Plasticware are commonly used when handling materials that react with glass, such as [[hydrofluoric acid]].
    7 KB (1,092 words) - 20:41, 2 October 2022
  • Similar to the glass and plastic type, they are used in vacuum filtration. Generally made of sta Metal tool for cutting a circular hole in a cork or rubber stopper, to insert glass tubing.
    13 KB (2,034 words) - 08:43, 5 May 2019
  • *Unfreeze frozen [[ground glass joint]]s
    2 KB (296 words) - 21:20, 29 June 2019
  • ...vacuum pump by a liquid [[nitrogen]] or dry-ice/[[acetone]] [[cold trap]]. Glass or PTFE stopcocks/taps allow vacuum or inert gas to be selected without the *First, check the whole installation and make sure all the ground glass joints are properly greased, all tubing is intact.
    5 KB (808 words) - 19:58, 24 August 2017
  • ...gh the main difference is that separatory funnels don't have a male ground glass joint. ...the lower tube, in the space below the stopcock and above the male ground glass joint. The purpose of this tube is to replace the liquid volume lost in the
    5 KB (882 words) - 20:50, 13 May 2021
  • ...y to the stopper. Some special types of gas washing bottles have a fritted glass. *Grease the joints
    2 KB (345 words) - 21:59, 8 April 2018
  • ...ansparent, though it can also be colored/opaque if impurities are present. Glass is commonly used for many everyday items, like drinking glasses and windows ...l oxides are added, like iron oxides, cobalt oxide or manganese oxide, the glass becomes colored.
    8 KB (1,291 words) - 21:56, 30 December 2023
  • ...ying tubes bulb U shaped.jpg|thumb|320px|Drying tubes with bulb and ground glass joint (left) and U-shaped (right)]] ...lid desiccant, with one end the tube-like structure terminates in a ground glass joint for use in connecting the drying tube to a reaction vessel or install
    2 KB (316 words) - 21:36, 12 April 2020
  • ...or often just '''kecks''', are fastening devices used to hold ground glass joints glassware when assembling lab set-ups ([[reflux]], [[distillation]], [[subl ...to be taken that clips made from this material are not being used to hold glass together that will get this hot. Typical problem areas include a flask over
    4 KB (634 words) - 20:06, 16 November 2020
  • ...topper the male joint of [[dropping funnel]]s or other glassware with male joints, often when connecting it to the solvent line to collect solvent. ...flasks without the risk of freezing, and don't require greasing or sleeve joints.
    3 KB (510 words) - 19:20, 10 July 2023
  • ...ng the screw head. The far end of the screw conveyor ends in a male ground glass joint, which points downwards. Some types of PAFs have a pressure equalizin *Grease the joints and place the stopcock on the female joint and secure it with a [[keck clip
    5 KB (831 words) - 07:44, 22 July 2019
  • [[File:Thistle tubes glass and plastic.jpg|thumb|200px|Glass and plastic thistle tubes]] A Thistle tube consists of a long borosilicate glass or plastic tube with a small bulb with funnel shape at the top. Liquids are
    2 KB (296 words) - 15:42, 24 September 2019
  • ...tup. Special variations also have a vacuum adapter or may include an outer glass cylinder (jacket), allowing air/fluid circulation or, to aid in insulation,
    2 KB (246 words) - 15:31, 3 March 2018
  • ...oint sleeves.jpg|thumb|350px|PTFE joint sleeves for 14/23, 19/26 and 29/32 joints]] ...''' is a [[Polytetrafluoroethylene|PTFE]] sleeve used to seal ground glass joints in processes where the reagents can attack [[silicone grease]], such as dis
    2 KB (253 words) - 21:35, 30 April 2020

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