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PTFE filters? What are they for?
Yep, they are used also in sterile 0.2um and 0.1um filtration, for example pharmaceutical injectable ...
5-12-2020 at 15:09
by: Fyndium
Gunpowder (Potassium Chlorate) from Bleach
Generally people interested in pyrotechnics and energetics should be paid extra caution about what t ...
5-12-2020 at 15:02
by: Fyndium
Advice on purchasing a reliable rotary evaporator for a cheap price
Sounds reasonable, as stripping solvents is one of the slowest phases of many works. Perhaps I'll co ...
5-12-2020 at 14:24
by: Fyndium
Gunpowder (Potassium Chlorate) from Bleach
Apparently a large portion will remain in the liquid, even though relatively small percentage concen ...
4-12-2020 at 05:28
by: Fyndium
Advice on purchasing a reliable rotary evaporator for a cheap price
Many videos on tube indicate that most of the stripped solvent does not condense but instead is appa ...
4-12-2020 at 03:10
by: Fyndium
Ordering watched chemicals from Europe
I would likely use a longer tube as a reactor, fill it with argon and fire it up. Placing a gravity ...
3-12-2020 at 17:30
by: Fyndium
Absolute volume of vessels?
I was thinking on taking a day to measure the weight and volume of all my glassware and making a lis ...
3-12-2020 at 17:22
by: Fyndium
Ordering watched chemicals from Europe
If you are a supplier and someone buys listed stuff, when do you report it and to whom? Or do chemic ...
3-12-2020 at 03:02
by: Fyndium
Absolute volume of vessels?
Why not take a scale and measure the water?
2-12-2020 at 20:10
by: Fyndium
Absolute volume of vessels?
I noticed when I carried out a reaction and calculated the volume wrong accidentally that a flask of ...
2-12-2020 at 14:51
by: Fyndium
Temp diff between stillhead and boiler?
I use glass thermoprobes on boiler(3 neck) and stillhead with ground joints. They have a little of p ...
2-12-2020 at 13:47
by: Fyndium
Advice on purchasing a reliable rotary evaporator for a cheap price
Would it be overkill to purchase a rotavap for hobby use? Stripping solvents and concentrating liqui ...
2-12-2020 at 13:05
by: Fyndium
Temp diff between stillhead and boiler?
What is the relationship between temp of vapor on stillhead compared to boiler temp? I've faced this ...
2-12-2020 at 06:15
by: Fyndium
Steel wool on hot plate for even heating??
What I've tested:

- Brake fluid starts to smoke quickly of thick smoke and smells terrible, never ...
30-11-2020 at 21:55
by: Fyndium
Steel wool on hot plate for even heating??
How do you use sand baths properly? I have need for 170-200C temps sometimes, last time I used avoca ...
30-11-2020 at 10:49
by: Fyndium
Fume hood motor
This came up elsewhere but most if all duct fan motors are brushless nowadays so there is very littl ...
30-11-2020 at 06:18
by: Fyndium
NFPA Diamond inconsistencies
This is quite true. Firefighting have different priorities than chemists.

The labels of chemical ...
30-11-2020 at 06:13
by: Fyndium
GL45 bottles: blue cap versus red cap
Looking at the compatibility charts, when you have to store something that could react with PP at an ...
29-11-2020 at 14:08
by: Fyndium
Do not keep illegal drugs for personal use in your house, if you do chemistry as a hobby
Issue with ordering third countries is they go through customs, while EU shipments are screened only ...
29-11-2020 at 04:07
by: Fyndium
Ordering watched chemicals from Europe
Where is sodium a regulated substance?
29-11-2020 at 03:55
by: Fyndium
Do not buy from laboyglass.com
It also commands thrice the price for similar products than sold by eBay vendors of similar quality. ...
29-11-2020 at 03:51
by: Fyndium
What are most dangerous toxic chemicals you are comfortable handling in your home lab?
Quantity control. Pressing words. When scaling up reactions, stuff can happen, and when it gets out ...
28-11-2020 at 15:44
by: Fyndium
Powder addition in reflux?
I ended up using a vigreux column on one neck with jointed funnel on top of it and having a dimroth ...
28-11-2020 at 15:40
by: Fyndium
Reaction kinetics - very long stirrings?
It was just a common example of biphasic ester base hydrolysis with stirring at NTP. I don't believe ...
28-11-2020 at 13:56
by: Fyndium
Vacuum glass implosion?
I always wonder how NurdRage can hold on his erlenmeyers when doing vacuums. One would expect them t ...
28-11-2020 at 13:53
by: Fyndium
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