Hi, It depends upon the physical make up of the samples. If you are trying to remove solids a teflon or nylon syringe filter will work fine. If your sample...
The Shifflet's
shiffty@...
Apr 1, 2002 2:49 pm
1142
Is it possible to analyze water soluble vitamins by LC/Ms without using phosphate buffer. Can anyone have information about this can be accomplished in ...
Hi, I am looking into headspace GC for blood alcohols. Is there anyone who is who is doing this? What type of system are you using? What type of column? What...
I need to know about the information about the application of LC/MS for Water soluble vitamins, Sugars, Pesticides and Food Preservatives. Khalid Ghaffar Saudi...
Dear Colleagues: We are trying to analyze some of the amino acids found in a frozen meal (Alanine, Threonine , Glutamine....) beside some of the carbohydrates...
yhassan
yhassan@...
Apr 4, 2002 7:50 pm
1146
Dear friends : At Martindale 32nd ed., page 1580, they say that the Troxerutin is in the German pharmacopeia (DAB). But, I do have the DAB, and I didn't find...
Needed: Viscosity Data on Water/THF Mixes. I am doing some chromatography using a water and THF gradient. Recently, I ran into some interesting flow and...
Hi, We have a Dionex Model is DX-300 ion chromatography system with the software is AI-450 version 3.32.00 currently running on a Windows 3.1 platform. We are...
Victor Leung
victorl@...
Apr 5, 2002 7:25 am
1149
Dear colleagues, Has anyone had experience with analysing 2-methylglutaronitrile, NCCH2CH2CH(CH3)CN, or similar aliphatic dinitriles, by GC? I was initially...
Tony Herlt
herlt@...
Apr 5, 2002 7:26 am
1150
Hi I am looking for a simple method to detect malic acid levels in red wine but at the moment I have problems with large peaks preceeding malic acid (tannins...
Hi Christy, I'm working with this analysis too. I need to know what's your intent, ie, forensic or clinical. Well, I'm using a GC Shimadzu with capilary column...
Hi Victor, We run a similar version under Windows 95. I think Windows 98 will also be okay. As a precaution, make sure you don't delete any of the old files ...
Phil, Thank you very much for your response! I'm very happy to learn that our system is compatible with Windows 95. However, when we tried to install the ...
Victor Leung
victorl@...
Apr 6, 2002 6:32 pm
1154
Dear Robert, I think that any technique or resulted on standardizations would have to be published. When I started to search on techniques that I could use...
Hi all, Thanks to everyone for their response to the Headspace GC question I had last week. I received a lot of answers. Now I have another question. I'm...
Dear Analysts Pease give my hand at this analysis. Sample: Vitamin A Palmitate, Vitamin E acetate, Panthenol Aim: qualitative analysis Matrix: none ...
dear Mr greetings I would like to know the steps of water analysis and treatment (manual chemical procedures)if possible please ,cause we are enviromental...
EPLRC
jobs@...
Apr 9, 2002 9:21 am
1158
Fluorimetric or EC detection in the dosage of catecholamines? GB...
Gianfranco Bruno
supergiaf@...
Apr 9, 2002 9:09 pm
1159
This is an excellent position at a leading company: Scientist I Responsibilities include: Performing development and optimization of HPLC based assays for the ...
Eric Celidonio
Eric@...
Apr 9, 2002 9:41 pm
1160
... I am not surre about your problem, but i guess that you want to reliable identify a substance in a sample using a normal GC with FID. In such a case, I...
Michael.Felke@...
Apr 10, 2002 12:32 pm
1161
Dear Analysts Pease give me a hand at this analysis. Sample: Vitamin A Palmitate, Vitamin E acetate, Panthenol Aim: qualitative analysis Matrix: none ...
Dear Analyist2000 ADS-Limathon make HPLC databases including HPLC Column Managerâ„¢ containing ChromViewâ„¢ applications database, which has 5000 applications....
LIMATHON@...
Apr 11, 2002 1:43 pm
1163
Dear Chromatographers I need thecnical data about resolving (both qualitative and quantitative methods)mixtures of sorbitol, manitol,xilitol and sugars like...
Afshin, First thing would be to formulate the question in one sentence. I assume yuo are looking for identification tests for Vitamin A Palmitate, Vitamin E ...
Alexander.Buske@...
Apr 12, 2002 8:05 am
1165
Hi, What a coincidence, I am currently working on a sorbitol method. You really have two ways to go 1) use what is called a sugar pak column and a totally...
The Shifflet's
shiffty@...
Apr 12, 2002 12:34 pm
1166
I will be purchasing a new HPLC soon. I am still undecided on what manufacturer to go with. I have been looking at everything out there. I keep going back to...
Mike, I have also been working on a sorbitol method, adding it to our test for glucose, fructose and sucrose. One thing that really bothers me is that my ...
Dirk Holstege
dmholstege@...
Apr 13, 2002 11:46 am
1168
Please help! Why is chiral chromatography important? What kind of research can be done with it? [Non-text portions of this message have been removed]...
Jaime553@...
Apr 13, 2002 11:48 am
1169
Dear Scientia ADS-Limathon make HPLC databases including HPLC Reference Managerâ„¢ containing information on almost 2000 column materials and ChromViewâ„¢ ...
LIMATHON@...
Apr 13, 2002 11:48 am
1170
There is a chiral e-group similar to chrom-l with ~400 members which can be found at : http://listes.cru.fr/wws/info/chiralchrom Additionally, Google's search...
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