772 topics
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Topics
PPM Limit Specification
by etaxene » Thu Mar 04, 2021 1:06 pm
Bismute identification
by etaxene » Thu Feb 04, 2021 10:37 pm
How do you prep samples for FFA GC columns?
by MSCHemist » Tue Feb 16, 2021 6:33 pm
silica gel and 8270 compounds
by -cla- » Thu Jan 28, 2021 5:28 pm
Acidic analytes in caustic solution
by Arne » Mon Dec 07, 2020 8:47 pm
Tare Balance
by crimelist » Wed Jan 20, 2021 4:50 pm
Why does water need to be 80°C to extract sugar from Spl?
by chemist23 » Mon Jan 11, 2021 9:24 pm
Preparing one standard with multiple concentrations, how?
by chemist23 » Tue Jan 05, 2021 4:44 pm
Sample Preparation
by pharm2004 » Fri Jan 01, 2021 8:15 pm
Cute Sampling Gizmo
by rb6banjo » Thu Dec 24, 2020 4:53 pm
Vancomycin from tissues
by bunnahabhain » Fri Dec 18, 2020 11:50 am
IsNotAtomObject error in MassHunter with a PAL sampler
by stevenwlloyd » Tue Dec 15, 2020 8:37 pm
High speed centrifuge vs 0.45um, filter which do you prefer?
by chemist23 » Wed Nov 25, 2020 9:06 pm
High speed centrifuge 50% ACN in H2O solution bad idea?
by chemist23 » Fri Oct 09, 2020 9:12 pm
Is my dilution math correct?
by chemist23 » Wed Oct 07, 2020 4:33 am
Saccharin in water
by hts123 » Sat Oct 03, 2020 8:09 am
the story is this:
by camale0nte » Fri Oct 02, 2020 1:52 pm
What happens to DNA during acetonitril precipitation?
by Friederike » Thu Sep 17, 2020 4:45 pm
Calculate the sample mass equivalent to 2 mg ion Chlorine
by ultima_86 » Tue Sep 15, 2020 10:30 am
Acrylic acid disposal
by Arne » Fri Aug 14, 2020 3:42 pm
sodium sulfate cleaning
by MichaelVW » Wed Jul 01, 2020 5:33 pm
Carbamate degradation in water samples
by ifqal » Mon Jul 06, 2020 5:52 pm
Derivatization with MSTFA, NH4I and Ethanethiol
by chem0211 » Tue Oct 15, 2019 7:54 am
Alternative SPE solvent?
by Cantacoxinha » Thu Jul 25, 2019 2:08 pm
Enzyme activity by direct monitoring of transamination rxn
by JLeeHads » Thu Aug 29, 2019 2:57 pm
Does lactose monohydrate convert to lactose after drying?
by chemist23 » Thu Sep 19, 2019 1:15 pm
SPE cartridge decomposition?
by KathyPolo » Fri Jun 05, 2020 12:41 am
Sample prep with MSA
by CFire0515 » Thu May 21, 2020 12:54 pm
sodium tetraethyl borate
by Sassolini » Tue Apr 07, 2020 3:37 pm
How to extract Ethanol from gel Hand sanitizers
by chemist23 » Tue May 12, 2020 7:53 pm
Sodiumazide in alkaline hydrolysis
by Förbrylium » Tue Nov 12, 2019 9:21 am
How do I know how much I should dilute my sample in HPLC
by hibu » Sat Apr 25, 2020 8:58 am
derivatisation with sodium tetraethyl borate
by emsman » Mon Mar 25, 2013 1:37 pm
SPE Class A requirement? Graduated conical centrifuge tubes
by LALman » Tue Mar 31, 2020 9:22 pm
PAH / DRO by hexane/acetone microwave/ultrasonic extraction
by LALman » Wed Sep 05, 2018 8:41 pm
525.2 Extraction Guidance
by ScientiaPotentiaEst » Fri Feb 21, 2020 2:46 pm
Matrix-matched calibration question
by thohry » Thu Feb 20, 2020 1:32 pm
Auto pipette availability
by Bigbear » Wed Feb 19, 2020 3:10 pm
Pesticides analysis
by johnmario » Sat Feb 08, 2020 2:00 pm
EPA 549.2 Conditioning Solution A
by MadAsAHatter » Tue Feb 04, 2020 5:33 pm
Oxidation using Oasis WCX cartridges
by Mattias » Fri Jan 24, 2020 1:06 pm
Diazald availibility
by Bigbear » Thu Jan 09, 2020 12:59 pm
about weighing out material
by agao123 » Tue Dec 17, 2019 4:43 am
Explanation of derivitization sequence
by john@sombra » Fri Dec 20, 2019 9:44 pm
Preparation of octenyl succinate
by mkarkov » Fri Dec 20, 2019 12:34 pm
Purge and trap - loss of methylene chloride
by Mathieu_CZRI » Mon Aug 28, 2017 6:01 pm
sample in pH=7.4 buffer with salts
by agao123 » Mon Sep 16, 2019 3:43 pm
peroxide transfer from textiles to water
by ucanmoruk » Wed Nov 13, 2019 11:45 am
Automatic timer 40 amps for hot plates
by bdhedhy19 » Mon Oct 21, 2019 3:04 am
Poor Recoverability From SPE
by handlovic » Thu Oct 10, 2019 1:48 am
772 topics

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