chrom-L : Messages : 1951-1980 of 2316

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1951	Hello friends I am trying to do some studies on the presence of Citricidal (diphenol hydroxybenzene) on GrapeFruit Extracts, Lemon and Citrus extracts, Olive...	pedrocas1972	Sep 3, 2004 8:45 am
1952	Hi, I have some other suggestions that may be of value. 1. Is the injection solvent high in organic composition? If so you could modify it to contain more...	the Shifflets shiffty@...	Sep 8, 2004 12:52 am
1953	Dear all, Can anybody help me with the analytical HPLC method in determining the purity of Gabapentin ? Thanking you all in anticipation, From, Mr. Kiran Desai...	kiran desai dkiran2	Sep 8, 2004 8:45 am
1954	Does anyone know how to separate FITC from a peptide using HPLC?...	giauh	Sep 8, 2004 8:45 am
1955	Has anyone analysis zoledronic acid using HPLC before?? I have found one paper on this drug which is published on the Journal of Pharmaceutical and Biomedical...	Shirley law jackandpig	Sep 9, 2004 8:44 am
1956	Good day group members. I am looking for an HPLC/GPC/GC or normal chemistry method for the quantetive determination of Keropur(r) (active component is ...	Groenewald, Conrad (CW) conrad.groenewald@...	Sep 10, 2004 10:23 am
1957	The NOAA/National Ocean Service/ Center for Coastal Environmental Health and Biomolecular Research in Charleston, SC (CCEHBR) has two contract positions open...	Dan Bearden dan_at_work_now	Sep 16, 2004 2:31 pm
1958	Good Morning group members: I wonder if some one in the group has any experience in the analysis of a product containing Diclofenac K, plus Vitamins B1-B6 and...	"Jose F. Simán B." honditius	Sep 16, 2004 4:47 pm
1959	Hallo, does someone analyze AA composition by HPLC afer derivatisation with OPA and FMOC? Which is the most useful column? Can a C18 column work well? Thank...	Stefano Copetti stecop2000	Sep 16, 2004 4:47 pm
1960	Dear Anybody, We are planning to use GC 14BPTF (Shimadzu) for the analysis of ethanol in water solution and ethanol in air mixtures using FID and TCD. Please...	arielvm	Sep 17, 2004 7:54 am
1961	Hi Trying to quantify irganox 1010 and irgafos 168. At the moment analysing standards in DCM. I am using C18 column, isocratic 20% propan-2-ol, 80%...	winnie hplc301	Sep 17, 2004 3:58 pm
1962	someone tells me, the drylab software is very useful for LC-MS method development. Can anyone tells me, how can i get this software. Thx...	jlpryuen	Sep 18, 2004 9:12 pm
1963	Ver, Generally, water + flame = no flame. But it is possible. Try DB type column, narrow bore, 10-15 meters, split, and no makeup gas in detector. I was...	Tim Tillman timtillman	Sep 18, 2004 9:12 pm
1964	To the drylab question from: "jlpryuen" <00000663@...> Try Molnar Institut in Berlin. They are the best in this field! ...	Dr. Ohmacht Robert robert.ohmacht@...	Sep 20, 2004 6:01 am
1965	Dear All, I am interested in HPLC quantitation method of determination of solanesol in tobacco leaves. Please let me know the reverse phase method for this...	rajneeshanand	Sep 20, 2004 8:09 am
1966	You can download an evaluation version from Rheodyne's web site. They should also have dealer information for Hong Kong: ...	Tom Jupille tjupille	Sep 20, 2004 8:10 am
1967	Dear all, I am a member of this and many other newsgroups, and must admit that on this one I mostly lurk, rather than play an active part in debate and...	peterst6906	Sep 23, 2004 8:30 am
1968	Hi Peter, You make some very good points and obviously it's a bit annoying for people to feel like they're doing someone else's homework! I don't think people...	Jo.Brodie@... spbcjsb	Sep 23, 2004 9:41 am
1969	Hi Jo, ... Sorry, but could not agree, I'm a member of much larger e-forums and the chatting there is much more intense. I'm observing this group for a long...	Bartlomiej Prusisz prusisz	Sep 25, 2004 8:53 am
1970	Hi All, I m looking to purchase Module Assy (PN # MOD-2003)- for Hewlett Packard Micro GC. Is there anybody can help, where I can get the replacement module ? ...	Johan Purnama johan_poernama	Sep 25, 2004 3:50 pm
1971	Hi, I have never used this type of instrument but I checked out their web page and it looks good on paper. What concentrations of ethanol will you be ...	the Shifflets shiffty@...	Sep 25, 2004 7:32 pm
1972	I have some stains(silver nitrate) in my hands? how to remove them? thanks!...	beiswood2000	Sep 26, 2004 12:46 pm
1973	... Try aqueous ammonium hydroxide....	Hans W. Mueller Hans.W.Mueller@...	Sep 27, 2004 5:50 am
1974	If the silver nitrate stains became already black, the silver-nitrate has been reduced to metallic silver (lapis infernalis!) and you can do nothing. In some...	Dr. Ohmacht Robert robert.ohmacht@...	Sep 27, 2004 12:54 pm
1975	Dear Fellow Chromatographers, recently we substituted in our GC autoinjectors 5 �L syringes for 10 �L syringes, since they allow the injection of volumes <...	matthias.kummer@...	Oct 1, 2004 12:45 pm
1976	We had the same problem with 5 �l GC syringes in Thermo GC autosampler, and we work too with exane, water, chloroform, etc. and derivatizing reagents. It...	Stefano Copetti stecop2000	Oct 1, 2004 2:13 pm
1977	Can anybody tell me if there is any problem with determining the UV response factor (using linearity slopes) of a compound relative to another by performing...	quaxtar	Oct 4, 2004 7:42 am
1978	Hi All, I have chromatographic data coming out from an HPLC column. The profiles are an overlap of Gaussian curves and each peak represents a protein of a...	Parag Shah parag7dl	Oct 4, 2004 9:37 am
1979	Hi Parag, ... You can do the job in an Excel spreadsheet using solver option, unless you have many data points (practically more then 30000, 65536 is the...	Karol Pilorz PILORZ@...	Oct 4, 2004 10:44 am
1980	Microcal Origin performs deconvolution much more easily than Excel, it have standard equations expecially for chromatography, like the EMG. Good luck Fabiano ...	Fabiano O. Silva drhtcl	Oct 4, 2004 2:34 pm

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