Dear Sandeep, I feel you need to add a tinch of Triethylamine to your mobile phase, your problem should get solved. regards, Srinivas ... [Non-text portions...
M SRINIVAS REDDY
srinureddi@...
Dec 2, 2005 3:47 pm
2215
Hi friends, Anyone is doing Air pollution analysis using GC-FID????. thanks anish...
Hi friends, This is regarding Sodium Benzoate anlaysis in Malt extract by HPLC. I am following the exact AOAC, 17th Edition, 2002 procedure. But not happy with...
Kia Ora Anish See AOAC Method 960.38 (Ch 47.3.03). This is an ether extraction/UV spectro method which works well. Cheers Peter Robinson Birthdays are good...
Kia Ora Anish Yes, common method for solvents ex charcoal tubes or badges, etc, using CS2 desorption. We use dual column (one polar, one non-polar), dual FID....
I am not familiar with this HPLC method what are the parameters. We have a validated HPLC method for total benzoates (we use a buffer system of benzoic acid...
the shifflet's
shiffty@...
Dec 30, 2005 12:33 am
2220
Dear Friends, We are users of Thermofinnigan Polaris Q GC-MS which works on Xcalibur software. We use Merlin to generate report of the analysis. But in this...
The Eurasian Journal of Analytical Chemistry (EJAC)is newly founded peer-reviewed international journal. Description The Eurasian Journal of Analytical...
Hi friends, There is a vacancy available for Senior Analyst in SGS India Pvt Ltd., Gurgaon. If interested please forward your resume to anish_habiba@... ...
Dear members of the list, I am about to set a laboratory in which sugar and sugar related products such as concantrated grape juice, candies and goodies would...
Hello everyone, This is with regard to making a calibration curve using external standard on HPLC and GC. In most of the references about this type of work,...
QC Scientist I - Torrance, CA A biochemical company in Torrance, CA is seeking a QC Scientist I. In summary, the primary qualifications for this position are: ...
Hi friends, For validation method of analysis there is many parameters : accuracy, precision, LOD, LOQ etc. For dissolution method which parameter we must...
DEAR COLLEAGUE I AM CHEMIST WORK IN MEDDIL EAST PETROLEUM COMPANY , I WANT TO REPLACE THE METHOD FOR DETERMINATION OIL IN WATER D 3921 -96 WHICH USE...
1) After having fullfilling many paper requests, it's my time to ask for a paper...... "Chen, C.-W., & Ho, C.-T. (1995). Antioxidant properties of polyphenols...
Dear members of the list, ư am searching for the possibilities to set a lab in which all sugar related productssuch as concentrated grape juice, fruit juice,...
Dear All, I need your expert advice. I have a Transgenomic USP L-19 Ca-form column and it has been used to detect sorbitol and glycerol in toothpaste, etc....
Hi I need help to start detection of aflatoxins(B1,B2,G1,G2) by HPLC specially sample preparation and extraction theme from animal food or grains (with details...
Dear Rajneesh, That's a really interesting question. I think it is mostly a matter of tradition. In former times (manual) injectors were used which were not...
matthias.kummer@...
Feb 13, 2006 11:31 am
2233
Hi, I can only speak for the tests that we use to validate methods which are based on the United States Pharmacopoeia or the ICH guidelines. 1. System...
the shifflet's
shiffty@...
Feb 19, 2006 9:28 pm
2234
Hi, I do not know if you can recover from this type of problem. Organic solvents (especially nonpolar solvents) will tend to deform if not destroy the...
the shifflet's
shiffty@...
Feb 19, 2006 9:31 pm
2235
Hi Everyone, Thanks for those who have responded to my message. I really appreciated your kind helps. When I was flushing the column with IPA the flow rate ...
Hi Group, I am searching for 5 uL or 10 uL gc syringes (point style 2) that have tapered needles, just like the syringes that are often used for autosamplers,...
Sorry, I can't offer the paper, but I wonder if you're using a guard column before your R18 column. If you're analyzing green and black tea, your samples are...
Based on a education level and responsibilities required for this position, am I the only one who thinks the HR department/managers of this company are ...
Hallo, On GC's with a split injector, and most of the modern systems are, the seconde methode is strongly deprecated. Injecting diffrent sample volumes results...
michael.felke@...
Feb 21, 2006 3:22 pm
2240
Ranjneesh: I think the problem with using variable injection volumes for external calibrations is that transport of the analyte onto the chromatography column ...
SGE, BD, Hamilton to name a few. ... __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection...
Dear Friends, I am looking to find a certified reference material (CRM) for analysing MTBE in water by using GC/FID. Would you please help me. Thank you. ...
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