does any one use rezex column for carbohydrate analysis by HPLC?
regular ticking sound from GCMS foreline oil pump, the sound incrase during injection
09 October 2017 9,623 2 View
i need to general methodolgies
31 December 2015 3,702 3 View
What is the most preferred solvent for dissolving a sample prior to injection on GC/MSD especially for pesticide analysis?
06 July 2014 4,916 29 View
what's the function of inlet in GCMS , and what's the advantages of Multi mode inlet over other types ?
06 July 2014 9,148 1 View
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01 February 2014 9,299 8 View
If I have the choice between 2 amino columns for carbohydrate analysis: Luna amino column from phenomenex and Pinnacle from restek which one should I choose?
10 November 2013 3,452 6 View
Does anyone have experience with amino acid determination of amino acids by GC-MS using a EZ-Fast kit and its advantage over an amino acid analyzer.
08 September 2013 4,639 4 View
I need a standard method for the determination of citric acid, malic acid and lactic acid in antiseptics (detergents) by HPLC
01 February 2013 6,731 7 View
Looking for a method to do this.
11 December 2012 7,093 8 View
Does any one use rezex column for carbohydrates which is an ion exchange column? Is it more accurate than amino column for sugar analysis?
09 October 2012 6,257 13 View
A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...
11 August 2024 9,801 2 View
Can anyone explain this method? Especially the last statement where it says only at 1.5 to 2.5mins was the MS/MS connected to the UPLC. How is that possible, is it a feature in this specific...
11 August 2024 8,141 3 View
Hello experts, Does anyone know any free software about retention index prediction ?
08 August 2024 7,403 2 View
I'm working on selecting antibodies against a recombinant protein that has a His-tag. My idea is to first bind the recombinant protein to a HisTRAP column and then use this column for an affinity...
07 August 2024 505 3 View
Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.
07 August 2024 8,782 3 View
Are there any suggestions or insights you can provide to help address this problem
06 August 2024 1,443 2 View
How can I measure the thickness of thin film by Uv-Vis?
06 August 2024 7,810 3 View
I am planning to collect human fecal samples for metatranscriptomic analysis using MGI. These samples are from indigenous people living in a region with high temperatures. I will have access to a...
06 August 2024 1,367 3 View
Mobile apps can be a powerful tool for enhancing academic performance, how can we use mobile apps for improving academic performance
04 August 2024 9,492 0 View
Why is TLC not a form of partition chromatography and paper chromatography not a form of absorption chromatography?
03 August 2024 7,035 3 View
