Oscar, Su mensaje no es claro. Por favor, escriba en espanol. Tim Oscafr Londońo <hozkardo@...> wrote: Good afternoon In a made preventive maintenance...
If I understand correcty, "run" is for you a whole sequence of samples analysed consecutively in a particular day with the same method. Every chromatographic...
I'm still waiting for someone who could help me with nor and nor,nor-retinal mass spectra..... Can anyone tell me how an alkene can "loose" a CH2 m/z 14 ? ...
We are working on a unique Chromatography sales position in the San Francisco area. If you know of anyone in the California region in a sales role, please...
Dear members of this forum, I would appreciate any information in order to know if an article reference is right because I did not find in any page in...
tequila2@...
May 9, 2005 11:03 am
2082
Recruiting a SENIOR RESEARCH & DEVELOPMENT SCIENTIST for a biochemical company located in Torrance, CA. Here is more information: Reports to: Director,...
Hello I am a beginner in hplc .How do I can learn more free about it . specially about principles . And how do I can recieve a free book about HPLC . thank...
Dear All, I know there was some discussion about the integration of impurities in chromatograms recently. I was wondering if there were any more thoughts on...
There are two types of impurity peaks in chromatography, one the known impurities which are the degradation products or the by products etc. the other type are...
Dear Fellow Chromatographers, I found in my lab a program called "Pro ezGC" which is able to model and optimize gas chromatographic separations based on...
matthias.kummer@...
May 27, 2005 11:52 am
2087
http://www.aii-usa.com/proezgc/ordering.htm Rodney George Senior Research and Development Scientist Gas Separations Research Supelco 595 North Harrison Road ...
Dear colleges, I would like to know if some of you has experience in the dissolution test for papaverine (not the hydrochloride) sugar-coated or coated...
Dear Chrom-L members, It's been so long not to contact you all. Well, I am interesting to learn about the organic dyes especially methylene blue. I want to...
Dear chromatographers, Chromatographers generally talk only about selection of column, but they seldom talk about the practical preparation of chromatographic...
can anybody help me in estimation of tegafur by HPLC(chomatographic conditions) ... How much free photo storage do you get? Store your friends n family photos...
Dear all, As I know all of you know about ion exchange resins. I decided tell my problem here hopefully you help me. I know we can regenerate cationic and...
My name is Taranu Anca, I'm PhD student in GPC characterisation of polymers. I have an old Waters 519 HPLC Pump, 8500N and I need an installation guide. ...
My name is Taranu Anca, I'm PhD student in GPC characterisation of polymers. I have an old Waters 510 HPLC Pump, 8500N and I need an installation guide. In my...
Hello friends I am testing Polyphenols (as Gallic Acid or Chlorogenic Acid) by UV. Does any one of you know if there is an HPLC test method? Thank you and good...
Hi I'm a student and looking for a GC method to analyse phytosterol (beta-sitosterol, campesterol...) in natural extract. This method should be validated...
This is an offical italian method for the analysis of sterols in olive oil: http://www.oliveoil.org/ita/allegati-norma1/allegato5.htm bye Stefano Stefano...
Hello, I want ask you kindly if somebody have this book Aqueous size exclusion chromatography, P.L Dubin, Ed.Elsevier Science, Publishers, Amsterdam. 1988 Anca...
My name is Taranu Anca, I'm PhD student in GPC characterisation of polymers(Romania) I have an old Waters 519 HPLC Pump, 8500N and I need an installation...
Hello group members I am working with a waters hplc (2695 separations module) with a PAD (2996) and was wondering if anyone could recommend (via experience) a ...
Melissa, Our column expert advises the following... Our AXXI-Chrom columns (ODS 5um 150 x 4.5 or 250 x 4.6) would do fine. If the client is seeing a high back...
in gas shromatography ethanol and other alcohol peaks tend to tail considerably, making quantitative anaylisis difficult by simple flame ionizaton detection. a...
Hello, I want to measure by GPC with RI and UV detector aqueous polymers solutions starting for example with poly(4-vinylpyridinium) soluble in water+methanol ...
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