Analysis Notes
A bestiary of the testing world: the regulation...
Certificates, laws, instruments and numbers that look like results but are not: a field guide to the acronyms of the testing world, one entry each, with what each one is,...
A bestiary of the testing world: the regulation...
Certificates, laws, instruments and numbers that look like results but are not: a field guide to the acronyms of the testing world, one entry each, with what each one is,...
One metal per product: hemp seeds, hemp oil, CB...
Hemp takes up cadmium and lead from the soil. Cadmium is the main concern in hemp seeds and hemp protein, lead in CBD oils and in hemp flower. The EU...
One metal per product: hemp seeds, hemp oil, CB...
Hemp takes up cadmium and lead from the soil. Cadmium is the main concern in hemp seeds and hemp protein, lead in CBD oils and in hemp flower. The EU...
One metal per product: mineral tablets, multivi...
In a tablet or capsule the metal most likely to be over the limit is seldom in the active ingredient: it is in the mineral salt or the filler that...
One metal per product: mineral tablets, multivi...
In a tablet or capsule the metal most likely to be over the limit is seldom in the active ingredient: it is in the mineral salt or the filler that...
One metal per product: protein powders, greens ...
A brand with twelve products does not have forty-eight heavy-metal questions. For each product one element fails it, it enters by one route, and one test at one point settles...
One metal per product: protein powders, greens ...
A brand with twelve products does not have forty-eight heavy-metal questions. For each product one element fails it, it enters by one route, and one test at one point settles...
Quantitative NMR: how a purity figure is made
A qNMR purity is a mass fraction, measured against a weighed certified standard. The measurement equation term by term, the internal standards with their data, the relaxation and signal-to-noise that...
Quantitative NMR: how a purity figure is made
A qNMR purity is a mass fraction, measured against a weighed certified standard. The measurement equation term by term, the internal standards with their data, the relaxation and signal-to-noise that...
How to read a test report: LOQ, measurement unc...
A certificate of analysis says lead: 0.095 ± 0.024 mg/kg, and the limit is 0.10. Pass or fail? Both answers are defensible. What the LOQ, the ± and the word...
How to read a test report: LOQ, measurement unc...
A certificate of analysis says lead: 0.095 ± 0.024 mg/kg, and the limit is 0.10. Pass or fail? Both answers are defensible. What the LOQ, the ± and the word...