You study Inorganic chemistry?
Have you setup GCFID’s or HLPC’s or triple quads before?
There are multiple stages we filter the phase gasses before injection, to ensure they do not contain ANY contaminates.
Mole-Sieves are one of the stages, sometimes alumina is as well…
Well… One of these filter aids/adsorbants is in fact sold at whole foods, and when combined with alumina and/or sieve beads, there are few things that can pass it and still contain contaminates.
Remember MONTHS back, maybe even years, when I commented about various filteration stages being skipped during Hydrocarbon processing/isolation for various uses in the world?
Remember the benzene contamination issue in various butane/propane blends used for USP uses?
There are filteration stages at refineries that may, and probably are, being skipped currently.
I experienced shortages for certain filters we sell, as did ertelsop for their filters, and other filter suppliers for the brewery/winery industries.
I have bio pharma friends who let me know they also had a shortage of these filter aids during covid peak, as well.
There is a world wide shortage of this specific adsorbant currently, for analytical, instrumental, and USP grades currently.
Give me until late July and I will factually be able to show you side by side comparisons with various adsorbants being used to remove the contaminates that are creating this issue.
If anyone else wants to try various adsorbants, be my guest. It’s honestly super easy to test before injecting into your systems, to see which adsorbants do what. Pour out your test runs and watch what happens.
I’m sure this is how @johnbigoilco found their solution.
We have no idea what the load capacity is of these adsorbants (how many lbs solvent before you need to regenerate your adsorbant), but it only takes a few days/weeks of testing to develop guidelines.