Diketones test levels

[morningdew]

so I try and vape only juice that has been tested for at least diacetyl, ap and acetoin.

Looking at published test results I notice that

Company A tests to approx. 0.275 ug/ml. That is I believe not detected above 0.275 ppm.

Company B tests tests to 2ppm, or 2 ug/ml. So not detected above 2 ppm.

That's quite a difference in levels detected at. Both companies return N/D test results.

Note: the 2 ppm result is on extract only and not mixed juice. I guess when mixed with pg and vg the level would automatically reduce due to dilution?

Do folks consider not detected above 2 ppm sufficient to ally most concerns around diketones or is 0.275 ppm the level tests ought ot be at?

Confused...

 

[Nimaz]

I suppose that the levels reported are at the edge of detection limits. They may have just chosen to report the lower detection limit rather than non-detected (ND). In fact, ND doesn't mean there is none but rather non-detected above the detection limits or the sensitivity of the assay.