Dear members of this forum, I need help in order to get an article about care and maintenance of HPLC columns. The reference is: F.M. Rabel. Am. Lab. 12(1):81...
tequila2@...
Apr 4, 2006 1:06 pm
2254
DMPK Scientist - Vista, CA I am assisting to recruit a motivated individual to coordinate all DMPK efforts (including analysis of In-Vitro and In-Vivo DMPK...
Can someone tell me if the affirmation is correct ? "ESI and MALDI are not techniques that volatilize polar compounds" These are techniques of ionization, can...
Dear group, I need to analyze my drug product which contains Kollidon, a polymer, by HPLC/MS. Currently, I am using a C18 column and employing a gradient for...
Dear Members, I am performing method development for analytical HPLC analysis of a drug product solution that contains a polymer called Kollidon. I am ...
Hello All, We are in the process of purchasing an ICP-MS. But I am confused by all the technologies available in the market. Please suggest which technology is...
A size separation before the C-18 column will pull out the polymer and if backflushed to an analytical C-18 column you separation may be very fast. This is a...
You probably can find the information you need by searching the archives of the listserv below - http://listserv.syr.edu/archives/plasmachem-l.html ... From:...
Dear Sir/Madam, I am using GC/ECD, Chrompack,CP9001 to analayzing THMs in water samples. My sample preparation method is extraction. My column is "CP-SIL 8CB,...
Hi friends, I need your opinion about the LC/MS/MS of Applied Biosystems API 3200 and Thermofinnigan (Thermo electron corporation). Could you pls. give your...
Dear users, I've found that many people commonly backflush C18 and C8 columns in order to clean them. I've also heard from some that recommend avoiding this...
I am receiving mails from this group in digest form. I had received Digest 837 and above which means I had missed 836 digests with huge information. Can any...
Dear members of this forum, I am working with mebeverine in pharmaceutical tablets and I am very interesting in getting your work in raw materials and tablets...
tequila2@...
May 12, 2006 11:40 am
2266
Dear chrom-l members, I need some information how to identification glucose in strach solution by HPLC, such as suitable eluent, column, and other else, may be...
Hi all, I recently graduated from the University of Connecticut with a BS in Chemistry. I have a very strong analytical background with over 3 years...
hi friends any one can help How to Develop Gc Impurity profile method for Drug producuts in Formulations? can you give any example? can you explain what is the...
Couldn't this be done using 2,4-dinitrophenylhydrazine derivatization as is done with aldehydes? On a related note... Does anyone know of any methods where...
hi friends any one help me How to Develop GC Impurity pfofile method for Drug products in Formulations ? can you give one compound example? what is the Role of...
Hi, I'm PHD student and I need the fragmentation scheme of polystyrene. Please help me ... Blab-away for as little as 1¢/min. Make PC-to-Phone Calls using...
Production Chemist - Torrance, CA I am assisting to recruit Production Chemists (at all levels including management) for a biochemical company located in...
Dear members of this forum, I need your help in order to get information about technical specifications of two modeules of a Waters HPLC, these are: Pump 600 E...
tequila2@...
Jun 22, 2006 2:42 pm
2275
I am trying to analyze zoledronate in serum by derivatizing it to its ethyl ester and then analyzing by GC-MS,however,the internal standard used in the article...
These links will have the information you need. 600E pump: http://www.waters.com/WatersDivision/SiteSearch/AppLibDetails.asp?LibNum=720000751EN 490E detector: ...
Dear Friends, I am using an old Varian 3400 GC (with FID detector; there is no slip injector). I am injecting 1 ul of sample (in pentane/hexane). It is giving...
If your samples are soluble in it, you can try carbon disulfide, CS2. The FID is almost 'blind' to this solvent, keeping a low steady baseline. You will need...
Dear Members, I wanted to fill SS column with C 18 material.Does any one can help me as how to fill the column or give me a clean procudure guidelines,The...
Rajesh Galgalikar
rajesh@...
Jul 7, 2006 12:23 pm
2280
... You didn't say, but I'll assume you're using a common capillary column. Check your split ratio. It sounds like you're running a splitless injection, so...
David Bostwick
david.bostwick@...
Jul 7, 2006 2:38 pm
2281
I want to find k and alpha for poly(ethylen)glycole adipate in chlorophorm to make some GPC measurements. Can somebody help me? A.T ... Yahoo! Messenger with...
Dear members of this forum, Thanks for all owing to many members gave the information I need in order to finish my work. Thanks as always again, Diego ... ...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
