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by tom jupille » Sat Nov 13, 2010 11:54 pm
How to embed chromatograms and reports
by tom jupille » Sat Nov 13, 2010 11:53 pm
Where to look first.
by tom jupille » Sat Nov 13, 2010 11:52 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
Sodiumazide in alkaline hydrolysis
by Förbrylium » Tue Nov 12, 2019 9:21 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
Derivatization with MSTFA, NH4I and Ethanethiol
by chem0211 » Tue Oct 15, 2019 7:54 am
Povidone Nitrogen Content - Kjeldhal method
by Geof235 » Fri Oct 18, 2019 4:45 pm
Derivitization Reaction for sample analysis
by Geof235 » Fri Oct 18, 2019 8:49 pm
SPME procedure modification
by Pynball » Mon Sep 30, 2019 10:41 am
Background peaks and trash in extraction
by ScientiaPotentiaEst » Wed Sep 25, 2019 6:25 pm
Does lactose monohydrate convert to lactose after drying?
by chemist23 » Thu Sep 19, 2019 1:15 pm
SPE stationary phase
by Pynball » Thu Sep 12, 2019 9:42 am
SIDA issue
by Krusvar » Mon Sep 02, 2019 12:50 pm
Enzyme activity by direct monitoring of transamination rxn
by JLeeHads » Thu Aug 29, 2019 2:57 pm
Australian supplier of acetyl chloride?
by brewerbill » Mon Jun 24, 2013 2:04 am
Calibration of balances, weights, and required check range
by LALman » Fri May 04, 2018 8:11 pm
Dilution Factor For Method 9056
by adamwmcanally » Thu Aug 08, 2019 3:10 pm
How to determine 5ppm impurity in 1 gram API?
by Simyo » Tue Aug 06, 2019 7:55 am
Dilution from stock solution - wrong results
by Ma Yik Ken » Fri Aug 02, 2019 2:15 pm
Dilution factor
by Suraz » Fri Jul 19, 2019 3:33 pm
Alternative SPE solvent?
by Cantacoxinha » Thu Jul 25, 2019 2:08 pm
Humic Acid cleanup in 8270/625 extracts
by James_Ball » Tue Jul 23, 2019 7:20 pm
Pierce C18 tips vs. home made StageTips/microcolumns
by gvudrun » Mon Jul 01, 2019 12:17 pm
New Purge & Trap for EPA 524.3- Advice on manufacturer?
by ciemnla » Sun Jun 02, 2019 7:24 pm
Sample prep for acetaminophen in water by LCMSMS using SPE
by hts123 » Tue May 14, 2019 9:54 am
Sample intake for premixtures
by Rndirk » Wed May 08, 2019 7:23 am
Pesticides in Oil
by debora.ferreira » Thu Apr 11, 2019 11:52 am
Sample containing HPMC 4M
by Geof235 » Sun Apr 28, 2019 7:44 pm
Repipet calibration?
by Bigbear » Tue Jun 03, 2014 12:34 pm
EPA 548.1 Extraction Issues
by thewrightben » Fri Apr 05, 2019 4:36 pm
Surfactant Removal
by Zoraku » Tue Jan 29, 2019 11:41 pm
EPA1694- Testing Panadol in water LCMSMS
by hts123 » Wed Mar 20, 2019 2:32 pm
Methanol and Ethanol by headspace
by sohaib1 » Fri Sep 21, 2018 3:15 pm
Autotrace 280
by Bigbear » Mon Mar 18, 2019 6:02 pm
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