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Safe preparation of lead oxides
oxides color can vary a lot, just because it is an ugly orange it doesn't necessarily mean low quali ... |
22-10-2019 at 02:59
by: Ubya |
Another section for 0 reply threads just like today's posts
[rquote=624711&tid=154199&author=rockyit98]i like that .also is there a way to find post or ... |
20-10-2019 at 22:38
by: Ubya |
silicon carbide from old abrasive paper ("sand" paper)
how do they mill it industrially?
i have a big clump of SiC crystals, i'd like to grind some to ma ... |
19-10-2019 at 11:25
by: Ubya |
Should 99.99% mercury contain slag? [Update from seller]
if it is just that stuff on the surface you can filter it through a syringe with a cotton plug at th ... |
19-10-2019 at 10:28
by: Ubya |
RED ROCK IN AMAZON
maybe we made fun of you too much, let's be honest.
your english is really hard to read, probably y ... |
19-10-2019 at 09:04
by: Ubya |
Should 99.99% mercury contain slag? [Update from seller]
[rquote=624626&tid=154193&author=draculic acid69]Looks more like copper than rust.[/rquote]
... |
19-10-2019 at 06:57
by: Ubya |
Should 99.99% mercury contain slag? [Update from seller]
If I remember correctly not all iron oxides are magnetic, so probably it is just rust |
18-10-2019 at 13:48
by: Ubya |
Vigreux column: 200mm vs. 300mm
well they are cheap, you could try using them, they won't be the best but better than an empty colum ... |
18-10-2019 at 04:08
by: Ubya |
RED ROCK IN AMAZON
Let's not forget the "polimerization" of oil, sap and red rock powder. You really like that red rock |
18-10-2019 at 03:04
by: Ubya |
Ideas to run a chromathography column (menthol / camphor)
[rquote=624441&tid=154158&author=SWIM]Just wondering,
If the menthol is synthetic in orig ... |
15-10-2019 at 12:46
by: Ubya |
Ideas to run a chromathography column (menthol / camphor)
if you already have a column it is quite easy, youtube is full of videos about the practical aspect ... |
14-10-2019 at 10:45
by: Ubya |
Any interest in PTFE or FEP powder - bulk purchase of lbs/kg's?
a quick google search can help finding out the right parameters for pressure and temperature.
i don ... |
14-10-2019 at 04:12
by: Ubya |
Any interest in PTFE or FEP powder - bulk purchase of lbs/kg's?
ptfe stuff is made by pressing and heating ptfe powder in a mould, if you can machine the right part ... |
14-10-2019 at 02:50
by: Ubya |
Bad days in the lab or with glassware?
[rquote=624200&tid=24908&author=Herr Haber]Take the ammonia out of the fridge.
Pour the amm ... |
10-10-2019 at 08:40
by: Ubya |
What temp is considered super heated steam and what materials will withstand these conditions?
[rquote=624163&tid=154147&author=Twospoons]I would try to use the same material throughout, ... |
9-10-2019 at 09:00
by: Ubya |
Burnt hotplate cord
[rquote=624123&tid=154145&author=Murexide]The cord is attached internally and leads directly ... |
8-10-2019 at 02:49
by: Ubya |
Who else is a chemistry major with a perilous future
[quote]
I don’t believe that the abundance of these people provides any kind of barrier for som ... |
6-10-2019 at 16:48
by: Ubya |
Who else is a chemistry major with a perilous future
take a master degree.
i'm going to graduate my (italian equivalent) bachelor degree in chemistry in ... |
4-10-2019 at 22:56
by: Ubya |
Denominator vs numerator - getting confused on which is which
[quote]
One thing that troubles me is that eventually I need a break from math to decompress. Som ... |
3-10-2019 at 22:39
by: Ubya |
Denominator vs numerator - getting confused on which is which
4/5
4 divided by 5
4:5
You have for things and you have to divide them in 5
I have 10 candies to ... |
2-10-2019 at 11:54
by: Ubya |
synthesis of anthranilic acid
[rquote=623864&tid=303&author=sparkgap]"This topic older than youtube, please don't reply to ... |
1-10-2019 at 06:16
by: Ubya |
Nilered obviously don't know how to minimise the amount of Cr waste
[rquote=623838&tid=154096&author=fusso]But I think high conc low vol waste is easier to hand ... |
30-9-2019 at 12:17
by: Ubya |
Nilered obviously don't know how to minimise the amount of Cr waste
In my opinion is easier to work with waste high in volume and low in concentration and waste high in ... |
30-9-2019 at 09:07
by: Ubya |
Gassing myself with hydrogen sulphide...
Quote: Originally posted by rockyit98
||
|| H2S is a possible candidate for induce hibernation in ... |
28-9-2019 at 11:53
by: Ubya |
Nilered obviously don't know how to minimise the amount of Cr waste
because that bath was to soak and clean the glassware, if he added the content of that flask the con ... |
28-9-2019 at 11:49
by: Ubya |
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