I use Turbochrom 6.1.02 from PE. I like it, although it's a bit crude and very Windows compliant. It's set up a lot like it's DOS based parent, PE Nelson. I...
Robert.M.Hofeldt@...
Jan 2, 2002 4:51 pm
1068
Hi I am trying to analyse the organic acid content of wine using hplc with an aminex column. When I run malic acid and lactic acid samples at 0.001 M H+ I get...
I used PE Turbochrom in my previous job and as Robert said, found it to be easy to use but with its limitations as with all software packages. One point to...
Dear Guys, I think the times of 30 years old dataacquisition systems are over and all the investments (time and money) are senseless. Today, you can buy the...
Milan Minarik
m_minarik@...
Jan 4, 2002 11:39 am
1071
Hi, Anyone know of a fairly simple method for analyzing C2 through C7 organic acids by GC, using an ECD or FID? Since the free acids tend to be troublesome...
Hello Phil, It's probably not a good idea to derivitize these analytes as they can get pretty volatile upon derivitization, leading to analyte losses during ...
ELLIS,JASON (A-Folsom...
jason_ellis@...
Jan 4, 2002 7:55 pm
1073
Hi Jason, Thanks for the reply. ... Wouldn't that depend on the ester or other derivative being made? For methyl esters, I am sure you're right. But there...
Phil, We analyze C1 to C9 without derivatization on a DB-FFAP column, 0.53 mm x 30 m, 1.0 mm. The solvent is acetone. Carrier is He at 3 mL/min. Temp....
Molan, Karen
kmolan@...
Jan 4, 2002 10:18 pm
1075
Dear Forum Members, I read about Tablet Hardness unit in m.u. Does anybody know what is m.u.? Any conversion factor with kp or kg .Where this ref.is available...
Kia Ora Phil 1. I used Chromosorb 102 in a packed column for many years for 'volatile fatty acid' (VFA) analysis, FID, underivatised. Just filter the sample...
Dear Phil, Please see our Supelco Bulletin 855 (B) for the analysis of free acids by capillary GC. I believe you will find the information you seek. You are...
Michael: Have you checked the purity of your standards? Malic acid standard may contain a small amount of fumaric acid. Faye ... L. Faye Russell Research...
Faye Russell
RussellF@...
Jan 7, 2002 3:39 pm
1079
Dear Forum Mmbers Limit for calibration of Balalnce should be +/- 0.1 %,Can we set the limit Liberal for the balalnce not meant for precision analysis like...
... From: Dipak Saptarshi [mailto:dips333@...] Sent: 06 01 2002 7:07 AM To: chrom-L; PharmTech Subject: Unit for Hardness Dear Forum Members, I read...
We are about to purchase an elemental analyser for CHNS & O analysis of organic compounds. How good is the trap & purge technique used in this type instrument...
We are about to purchase an HPLC from Waters (Alliance system) with a PDA, and fluorescence detector. An option is the service contract. They want to charge...
I've never purchased an LC without at least taking the service contract for the first interval offered. The amount, $5900 sounds a little high but I'm...
We are setting up our lab for an HPLC (first one). Any suggestions on a water polishing unit for HPLC water? Also, what test would you consider mandatory to...
Hi, It really depends on your expected volume. If you plan on using low volumes of water I would recommend that you can purchase bottled HPLC water. If you...
The Shifflet's
shiffty@...
Jan 13, 2002 12:17 pm
1086
Hi, Service contracts are like insurance policies. How lucky do you feel? If you have little experience with HPLC then I would recommend purchasing the...
The Shifflet's
shiffty@...
Jan 13, 2002 12:17 pm
1087
Usually the service contract is supposed to be free for the first year(s) when you purchase an instrument. For example Agilent gives 1 year of free service, so...
Valentina Lonzarich
valentina13@...
Jan 14, 2002 8:31 am
1088
Are Waters not including any warranty on the instruments ? The norm I believe is 12 months parts (maybe labour aswell). Daniel ... From: dirtman92008...
A client of mine located in MD is seeking a LCMS Product Specialist. Founded in 1875, they are leading the way in the development of global technologies. Among...
Probably you have some impurities in your hydrocarbons solution. Do you also have a GC-MS? Maybe you don't, but if you had a mass you could try to run your...
Valentina Lonzarich
valentina13@...
Jan 18, 2002 10:40 am
1091
Valentina, Does the unknown peak remain in proportion as the injection volume in increased? If not so it might be a system peak & not from your sample. You ...
William Suits
billsuits@...
Jan 19, 2002 4:01 pm
1092
Dear Sirs/Madams, Is there anybody who can advise me where I can find information about how to prepare a fluconazole solution for kinetic study in HPLC? ...
Dear Colleagues: We have an isocratic HPLC system with RI and U.V. detectors, Aminex HPX-87H (300*7.8 mm) column from Bio-Rad (for organic acid analysis) and ...
yhassan
yhassan@...
Jan 21, 2002 9:33 am
1094
Dear Members Pharma Lexicon has just launched a Palm Pilot version of the Medical/Pharma Abbreviations Database. Details about it can be found at the following...
Where can I buy a little container of helium as degasser? GB \...
Gianfranco Bruno
supergiaf@...
Jan 23, 2002 8:18 am
1096
The suggestion to purchase high-purity water if your needs are minimal is certainly worth considering. For larger quantities you might consider a Milli-Q +UV...
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