Simba or @janoshik can correct me if if wrong but in regards to cross contamination:
deca and eq have different molecular weights And low melting points, so if your eq raws have deca in them (as contamination from the supplier) they would separate in mixture based on their densities
So theoretically you could take a small samples of the eq raws and get an hplc test that shows only eq, but once you mix with an oil (and thus creating a solution) you would have contaminated samples with the compound ratios in finished product being equal to the ratios of the raws.
The difference in weight and ratio of contamination might be enough to account for the inaccuracy. Adding a heavier part to any set will increase net molecular weight and displace more oil
I haven’t run the numbers and could very well be wrong. I’d like @mp46 of Jano or someone more knowledgeable and awake to chime in
deca and eq have different molecular weights And low melting points, so if your eq raws have deca in them (as contamination from the supplier) they would separate in mixture based on their densities
So theoretically you could take a small samples of the eq raws and get an hplc test that shows only eq, but once you mix with an oil (and thus creating a solution) you would have contaminated samples with the compound ratios in finished product being equal to the ratios of the raws.
The difference in weight and ratio of contamination might be enough to account for the inaccuracy. Adding a heavier part to any set will increase net molecular weight and displace more oil
I haven’t run the numbers and could very well be wrong. I’d like @mp46 of Jano or someone more knowledgeable and awake to chime in