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Questions related from Mark Kelm
I'm recovering citric acid by addition of calcium carbonate from a process as it's calcium salt. Would like to method to determine purity of calcium citrate product. The method I found uses...
23 August 2021 9,080 3 View
Assuming the assay is done properly, why would values be 110-125%? The one thought I had is that different cmpds may have higher response factors. Samples were fractions from a crude...
05 March 2021 454 4 View
Specifically, what are the mono, di, and other major oligo saccharides present in hemp or cannabis? Glucose, xylose... and?
19 January 2021 804 3 View
More specifically, what would be the most appropriate standard(s) for quantifying total phenolics or tannins in samples that contain mixtures of both hydrolyzable & condensed tannins? Assume...
26 May 2017 4,726 3 View
Need US lab to run a couple samples for aa and small peptides. TIA, Mark
02 November 2016 7,997 1 View
Looking for something akin to Bruker's old ion trap. Want to use primarily for characterization of unknown small molecules. MS/MS.
01 January 1970 3,395 1 View
