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Building a DIY Pirani Gauge from a lightbulb
[rquote=694139&tid=160402&author=Twospoons] for me a mercury manometer is now an option.
[ ...
11-7-2024 at 04:19
by: Sulaiman
Ika cmag hs7 fried circuit
The capacitor looks OK, maybe poorly fitted.
But, if removed and tested with an Ohm meter, (short/d ...
10-7-2024 at 05:03
by: Sulaiman
Ika cmag hs7 fried circuit
The primary dc resistance would have been approximately
(secondary resistance) x (turns ratio)[sup] ...
10-7-2024 at 00:52
by: Sulaiman
Ika cmag hs7 fried circuit
My first suspect would be the blue transformer.
The primary winding is probably open circuit.

A ...
9-7-2024 at 08:27
by: Sulaiman
easiest acid
The pKa of boric acid is 9.24, 12.4, 13.3 (1st, 2nd, 3rd proton)
So I imagine almost any common aci ...
4-7-2024 at 01:41
by: Sulaiman
easiest acid
HCl is suitable, cheap and commonly available.
4-7-2024 at 00:42
by: Sulaiman
Barium sulfate purification
'a small ammount of hydrofluoric acid' [b]may[/b] passivate some contaminants making them difficult ...
2-7-2024 at 11:20
by: Sulaiman
Very quick review of a 12v air/vacuum pump
I bought one of these

Mine had a broken out barb but otherwise ok

It wou ...
1-7-2024 at 00:44
by: Sulaiman
Most Beloved Chemicals
I've been relocating a lot lately,
and had to dispose of chemicals frequently,
so I know what I v ...
30-6-2024 at 23:29
by: Sulaiman
Can we infer what is broken in the hot plate given the following?
The spiral heating element could also form a spark-gap transmitter,
If there is a spark somewhere ( ...
30-6-2024 at 11:14
by: Sulaiman
Building an Analytical System for Plant Alkaloids
Not my area at all, but may I suggest that someone in Ghana orders equipment and supplies for tradit ...
30-6-2024 at 10:44
by: Sulaiman
Rubber sheet to aid with vacuum filtering
A really useful tecnique
(skip to 13min45sec)

I'm ...
29-6-2024 at 23:40
by: Sulaiman
Silver anode for making sulfuric acid?
A silver anode will dissolve in distilled water
(that's how I made colloidal silver)
It is very sl ...
29-6-2024 at 22:40
by: Sulaiman
Homemade carbon electrodes
[rquote=693888&tid=159561&author=Hexabromobenzene]Is the this theme interesting to anyone?[/ ...
29-6-2024 at 21:23
by: Sulaiman
Should I buy this furnace on ebay?
Charcoal with forced air
will get steel orange hot, ...
29-6-2024 at 06:00
by: Sulaiman
Did eBay pull all iodine crystal/prill listings?
I've never seen iodine powder before,
26-6-2024 at 00:30
by: Sulaiman
Can we infer what is broken in the hot plate given the following?
Analysing harmonics of rfi [i]could[/i] lead to a diagnosis,
but it's much easier if you just open ...
24-6-2024 at 23:59
by: Sulaiman
Should I buy this furnace on ebay?
Should I buy this furnace on ebay?

Yes, then you can review it for others ;)

Personally, I wou ...
24-6-2024 at 05:55
by: Sulaiman
Coffee cup warmer for evaporation.
I've recently been evaporating dilute nitric acid solutions to recover solid residues,
I've found ...
24-6-2024 at 02:38
by: Sulaiman
Notes on the new NurdRage video: making sulphuric acid from sulphates and oxalic acid
Nice experiment. Worth trying myself.
Would a coagulant/flocculent such as potassium alum help?
23-6-2024 at 03:36
by: Sulaiman
Differential thermocouple measurements ?
I think that a plastic tube is a poor choice due to it's low thermal conductivity,
any thickness di ...
21-6-2024 at 07:30
by: Sulaiman
aquarium/hydroponic chiller
Had a quick look at a manual for your model:
2300 BTU/h, which is 674W of cooling power - plenty.
20-6-2024 at 01:31
by: Sulaiman
Precious Hotplate Stirrers
I have a similar feeling about my dual-stage oil-sealed rotary-vane vacuum pump..
I bought it for b ...
20-6-2024 at 00:07
by: Sulaiman
IKA HS7 - no temp control or actuator response
[rquote=693632&tid=154756&author=Cendre]PS: as it’s the wrong plug I’m using an adopter ...
18-6-2024 at 02:31
by: Sulaiman
DIY melting point apparatus
I consider the most important aspect of temperature measuring devices to be Repeatability.
Everythi ...
13-6-2024 at 22:50
by: Sulaiman
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