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are widemouth vials a thing? Search for '10ml ground glass Jar' (or 'bottle' )
or 'weighing jar' (or 'bottle') |
25-7-2024 at 23:06 by: Sulaiman |
Building an Analytical System for Plant Alkaloids 1) A usb supply + 'power bank' form a nice 5V dc ups for low power.
2) 12V dc at high power can b ... |
25-7-2024 at 22:54 by: Sulaiman |
fractionating at reduced pressure, DIY packed column? For fractional distillation at atmospheric pressure,
fractionating efficiency is mainly determined ... |
23-7-2024 at 15:50 by: Sulaiman |
Inductor and capacitor for rectifier output filter [rquote=694207&tid=160171&author=yobbo II]Also i think i need to get a proper true rms readi ... |
19-7-2024 at 04:38 by: Sulaiman |
Ika cmag hs7 fried circuit (reassurance) Even if the motor and heating element are ok
getting a new hotplate stirrer is probab ... |
16-7-2024 at 02:06 by: Sulaiman |
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
[file]102176[/file]
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
https://www.youtube.com/watch?v=8ylKINhV490
(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
(eg https://www.ebay.co.uk/itm/204819849468)
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,
https://www.ebay.co.uk/itm/184626885960 |
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 ![;)](./images/smilies/wink.gif)
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 |
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