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 ... ...
Diego Delmonte
tequila2@...
Jul 19, 2006 1:25 am
2283
Dear colleagues, I'm needing some help again! I need 2 articles that I don't have access. Can somebody send them to me? 1: Lapolla A, Flamini R, Dalla...
Anyone have a good method for caffeine (or other markers of human sewage) in river water? Preferrably SPE HPLC but GCMS could work also. The more detailed...
Hi, we are currently testing a batch of alpha terpineole (FCC). The requirement for the assay is: not less than 96.0% (sum of alpha-, (E)-beta-, (Z)-beta-,...
Thomas Vater
thomas.vater@...
Dec 2, 2006 9:47 am
2286
11th December 2006 Dear colleagues, I would like a copy of the following article if any of you have it in your research library: Parpinello, Giuseppina Paola;...
Tony_Herlt
herlt@...
Dec 11, 2006 1:07 am
2287
Dear members of this list, I would appreciate if anyone help me in order to get two articles which is very helpfull for me in order to improve my work with ...
tequila2@...
Dec 15, 2006 11:35 am
2288
Senior Scientist/Group Leader - Analytical Development A great company in Tarrytown, NY is seeking a Senior Scientist/Group Leader-Analytical Development....
Hello, I'm working on an HPLC, Hewlett Packard 1050. I'm not being able to detect any peak, even though I can see that the detector is reading an absorbance...
Manager, Process Development - San Diego, CA A client of ours in San Diego, CA is seeking a Manager, Process Development. They are a specialty biotechnology...
Dear members of the list, i have been appointed to a new laboratory and i am expected to learn how to detect mycotoxins in food and feed materials. firstly i...
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