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Suitable manometer
"I guess you could bend a glass tube to a U-shape using a torch and fill it with liquid mercury.
Bu ... |
26-1-2023 at 11:12
by: yobbo II |
Preparation of elemental phosphorus
I posted this in another thread so it's a bit of a double post.
The following is from the Bell Ja ... |
26-1-2023 at 11:06
by: yobbo II |
Confusion on SO3 Synthesis
The following is from the Bell Jar, the first five years page 3 - 8:
A magazine dedicated to vacuum ... |
26-1-2023 at 11:03
by: yobbo II |
DCM
DCM has disappeared from the high street paint remover products (in the EU anyways).
It is still ... |
26-1-2023 at 10:55
by: yobbo II |
diffusion pump oil diy alternative?
When making a diffusion pump what size holes on the 'chimeneys' do you need?
I cannot see it di ... |
19-1-2023 at 07:18
by: yobbo II |
Looking for an online resource that contains large amounts of solubility data
See the Solubility Data Series (SDS) A number of volumes with solubility data.
https://sr ... |
13-1-2023 at 17:00
by: yobbo II |
Suitable manometer
A gauge that reads from zero to about 30 Torr would be fine AFAIK.
Some vacuum distilations are ... |
13-1-2023 at 16:58
by: yobbo II |
Welch duoseal 1397
Cranked up the pump and measured the vacuum using an old home made McLeod gauge of iffy internal dim ... |
12-1-2023 at 17:20
by: yobbo II |
diffusion pump oil diy alternative?
There is a read on diffusion pump oils here:
http://www.belljar.net/tBJ_First_Five_Years.pdf
... |
12-1-2023 at 17:17
by: yobbo II |
chlorate cell
I need some help:
Try here
http://www.chlorates.exrockets.com/chlorate.html
Yob |
5-1-2023 at 12:07
by: yobbo II |
diffusion pump oil diy alternative?
Have you tried using the pump yet.
A diffusion pump is on my list..........
There is a t ... |
21-12-2022 at 19:00
by: yobbo II |
Very cheap 400KV,DC HV generator
They are like a flyback transformer from an old (tube type) TV set.
Yob |
20-12-2022 at 18:08
by: yobbo II |
Welch duoseal 1397
My pump is old. It was purchased in about 1986 and was second hand. An exploded diagram of older ... |
15-12-2022 at 17:41
by: yobbo II |
Welch duoseal 1397
My pump is old. It was purchased in about 1986 and was second hand. An exploded diagram of older ... |
15-12-2022 at 17:40
by: yobbo II |
Lead Nitrate to Lead Chloride
http://www.sciencemadness.org/talk/viewthread.php?tid=5490
try here
Yob |
8-12-2022 at 17:43
by: yobbo II |
Catboy Chemical Society
and you have had your hands in the malachite jar too
Yob |
8-12-2022 at 17:42
by: yobbo II |
Welch duoseal 1397
Hello,
Pictured is the 'end plate' of the 1397 vacuum pump and also the body showing the vanes ... |
21-11-2022 at 18:38
by: yobbo II |
Is induction heating still effective with molten copper ?
Also if you were using a metal container of some sort (iron/steel) to hold the copper, would the i ... |
21-11-2022 at 18:19
by: yobbo II |
Unfamiliar Microscope
Is there two objectives on the bottom of the scope (turn it up).
Yob |
16-11-2022 at 17:34
by: yobbo II |
Welch duoseal 1397
Thanks for the help.
I had to laugh. I emailed a company that was selling/supplying parts for Wel ... |
11-11-2022 at 17:28
by: yobbo II |
Welch duoseal 1397
THanks for reply.
I found another exploded diagram that shows the valve.
What is its function?
... |
10-11-2022 at 04:38
by: yobbo II |
Welch duoseal 1397
Hello,
I have a dismantled a Welch duoseal 1397 vacuum pump. There is a bellows controlled valve in ... |
9-11-2022 at 18:05
by: yobbo II |
Using a(n Ag) mirror RBF to carry out reaction with fused alcali
You can plate tantalum onto reaction vessells but that is not your original question.
Something ... |
29-10-2022 at 14:25
by: yobbo II |
3 350/420 volt phase generator for 230 Volts single phase
Thanks,
I cannot check anything as I don't own the generator yet and it is online.
I had n ... |
29-10-2022 at 14:21
by: yobbo II |
3 350/420 volt phase generator for 230 Volts single phase
Thanks for replys,
The voltage threw me out too.
I think maybe the 380/420 (I misread the plat ... |
27-10-2022 at 14:37
by: yobbo II |
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