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DIY Flashback Arrestor
Flashback arrestors used for welding are often sold combined with anti-backflow (one-way) valves. Th ... |
18-7-2010 at 13:08
by: densest |
troubleshooting a homemade hotplate
@peach - you're asking about risks and risk evaluation. Edit: there's a "Bonding PTFE" thread on thi ... |
17-7-2010 at 21:30
by: densest |
troubleshooting a homemade hotplate
The market for "concept" = insanely overpriced "decorative" = ugly house things is recovering. The t ... |
17-7-2010 at 10:26
by: densest |
Theory of spinning band distillation
A current vendor of spinning band distillation equipment: http://www.solvent--recycling.com/spinning ... |
15-7-2010 at 20:23
by: densest |
Fume Hood Vs. Range Hood
Are you planning to heat anything inside your hood? Plastic sides plus a splash of solvent = very fl ... |
15-7-2010 at 20:13
by: densest |
Air free technique without a nitrogen tank?
At least here, the test date & tester is stamped into the metal of the tank, so no certificate i ... |
14-7-2010 at 19:08
by: densest |
Synthesis of Solid Calcium Hypochlorite
@mewrox99 - put on your safety glasses, face shield, and don't hold anything in your hands. This way ... |
14-7-2010 at 18:58
by: densest |
Air free technique without a nitrogen tank?
In the US, retail argon, nitrogen, etc. can be bought for between $25-60 for 240CF depending very mu ... |
14-7-2010 at 17:03
by: densest |
troubleshooting a homemade hotplate
I'll vote with zed - $10 to $15 at several local "remaindered general merchandise" stores. Spilling ... |
14-7-2010 at 07:41
by: densest |
Finkelstein reaction
@S-S - the unexpected substitution of I for Cl or Br using NaI or KI in acetone is documented in ref ... |
13-7-2010 at 16:26
by: densest |
Liquid heat exchangers
@unionised - the Peltier units have extremely thin alumina plates for top and bottom - strong, but v ... |
13-7-2010 at 14:55
by: densest |
Air free technique without a nitrogen tank?
Using the evidence of how safety regulations are written in industry, if the valve or regulator fail ... |
9-7-2010 at 14:16
by: densest |
Increasing melting temperature in vegetable wax
Have you talked to any hobbyist wax suppliers? They advertise both high melting point wax and variou ... |
9-7-2010 at 11:58
by: densest |
Air free technique without a nitrogen tank?
A typical "K" (1.5m high) tank holds 200-250 cubic feet of gas. That's about a 2m cube. Unless your ... |
9-7-2010 at 11:32
by: densest |
Condenser cooling
@mnick12 - have you checked out the power in vs heat pumped curves for thermoelectric modules? It mi ... |
9-7-2010 at 08:00
by: densest |
2 quick, but rather random, questions
@angel - when you tried strontium compounds, did you add a chlorine donor? The deep red color comes ... |
9-7-2010 at 07:34
by: densest |
Portable Oxygen Concentrators
@peach - yes, needle valves are necessary for low flow rates. You may find that a 2-stage regulator ... |
8-7-2010 at 18:32
by: densest |
Temperature controller for an Ikamag hotplate?
Some PID controllers have a maximum output setting for exactly the reasons mentioned.
TEMs are ve ... |
8-7-2010 at 18:22
by: densest |
troubleshooting a homemade hotplate
@crucible - it's easy to lower the resistance without making any part go dead.
Right now you have ... |
6-7-2010 at 08:55
by: densest |
Haloalkane synthesis help
Perhaps off topic, but how does one dry glymes? They are all miscible with water (at least a few per ... |
4-7-2010 at 12:54
by: densest |
CTC PAL Autosampler programming
@watson.fawkes - thanks for the clarification... yes, DMCA is about copy protection. Kodak sued (or ... |
4-7-2010 at 12:41
by: densest |
Better Living Through Chemistry
I [i]mostly[/i] agree with polverone.... with a few extensions and caveats.
Anyone and everyone - ... |
2-7-2010 at 21:31
by: densest |
Salt + Citric acid = HCl?
pK1 of citric acid is about 3.1, so less than 1/1000 of the Cl- could be distilled out as HCl. Not a ... |
2-7-2010 at 21:05
by: densest |
Acetic anhydride preparation
@watson.fawkes - Schott has sent me to a fabricator. They don't sell in less than case or melt quant ... |
2-7-2010 at 20:46
by: densest |
CTC PAL Autosampler programming
There are a couple of things you can do. One, which is probably illegal in the USA - the DMCA (Digit ... |
2-7-2010 at 20:30
by: densest |
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