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Washing fruit
[rquote=496361&tid=77977&author=DraconicAcid][rquote=496333&tid=77977&author=zts16][ ...
12-11-2017 at 14:55
by: feacetech
Caustic calcined magnesia?
Fertiliser Calcinced Magnasite aka CalMag aka MgO

you can buy tonnes and tonnes of it if you want ...
19-10-2017 at 12:01
by: feacetech
Disagreeable Impurity in Drain Cleaner Sulfuric Acid Based Processes
We get spent acid @ ~98.5% im not sure which process it comes from but its isnt petrochem (Nickel sm ...
18-10-2017 at 16:32
by: feacetech
Fertilizer's NPK rating - how is this calculated?
Yea thats as i thought every where express N as elemental in a NPK, but P and K can vary depending o ...
8-10-2017 at 11:51
by: feacetech
Fertilizer's NPK rating - how is this calculated?
[rquote=493605&tid=77281&author=woelen]As far as I know, the percentages are computed as if ...
5-10-2017 at 17:55
by: feacetech
Most hydrophilic: MgO, CaCl2, Cu(NO3)2, Ca(NO3)2, CuSO4, NH4NO3 - Very interesting Results!!
https://en.wikipedia.org/wiki/Critical_relative_humidity

is a helpful parameter

however contai ...
7-9-2017 at 19:54
by: feacetech
Total chlorine
so TAC - FAC would give you an estimate

however Chlorine is very reactive and in water and forms ...
7-9-2017 at 19:52
by: feacetech
Total chlorine
for water treatment I use to measure Free Avliable Cholrine (FAC or FAH) and cholride (silver nitrat ...
6-9-2017 at 16:07
by: feacetech
How useful is a soxhlet ?
i used the condeser on the right with a different style soxhlet to extract fat from solids using 30- ...
30-8-2017 at 18:34
by: feacetech
Solid fat and Vacume question
have you rendered the fat yourself or has it come from a rendering plant

was it processed in eye ...
15-8-2017 at 17:02
by: feacetech
Need an easy synthesis of Perchloric acid
[rquote=488269&tid=75570&author=Tetra][rquote=488267&tid=75570&author=feacetech]that ...
19-7-2017 at 14:42
by: feacetech
Re-calibrating digital PH meter?
pH meters need care and constant calibration (even expesnive ones), pretty much before every use unl ...
18-7-2017 at 17:10
by: feacetech
Drying raw materials temperature prior to Soxhlet extraction
I have dried fungus at 40C over threes days (closed air oven), but it proably depends on the water a ...
18-7-2017 at 16:59
by: feacetech
Need an easy synthesis of Perchloric acid
thats the common concentration I buy it at

[Edited on 19-7-2017 by feacetech]
18-7-2017 at 16:54
by: feacetech
Storage for Sulfuric Acid (H2SO4)
98.5% can be stored in mild steel, just rember the more if the conc gets to low it will eat the stee ...
21-6-2017 at 15:53
by: feacetech
Extraction of highlighter dye V2
[rquote=485990&tid=74880&author=UC235]5-chloro-2-methyl-4-isothiazolin-3-one is a biocide to ...
20-6-2017 at 17:23
by: feacetech
NH4+ determination
try making some standards with the APHA method and see if they turn blue
13-6-2017 at 12:14
by: feacetech
NH4+ determination
APHA 2005
45000-NH3 F. Phenate Method

Reagents

Phenol solution
Mix 11.1 mL of Liquified Phen ...
11-6-2017 at 14:10
by: feacetech
NH4+ determination
if you cant even get standards and blanks for it to change to the correct colour something is wrong ...
11-6-2017 at 13:49
by: feacetech
NH4+ determination
that would be similar to direct distilation.

except you add NaOH in excess and steam distill and ...
7-6-2017 at 15:35
by: feacetech
NH4+ determination
I havent done any soil analysis

But do you need N-NH3 or N-NH4+ or both

or would TKN work as w ...
6-6-2017 at 15:41
by: feacetech
When Chemistry Goes Wrong
[rquote=482874&tid=63645&author=tsathoggua1]Excluding getting it in the eyes, I'm surprised ...
18-5-2017 at 14:03
by: feacetech
Manganese Heptoxide + Nitromethane = Nothing?!
yea that's what I thought, it did have a small amount of fat in it but not much (1%) lots of ash and ...
27-3-2017 at 17:45
by: feacetech
Manganese Heptoxide + Nitromethane = Nothing?!
Mn[sub]2[/sub]O[sub]7[/sub] is a dangerous beast and not always predictable

I remember playing wi ...
26-3-2017 at 14:04
by: feacetech
help with a soxlet extractor
yea I always used Whatman cellulose thimbles, if the material has a tendency to float plug the thimb ...
19-2-2017 at 14:07
by: feacetech
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