Learn
Reference material for whoever has to sign the purchase or release the lot.
What has to appear on a CoA, which signs tell you it is worthless and why the lot number is the first thing to check.
What a 10:1 means, why it cannot be converted into a percentage and when each way of declaring is the right one.
Water, ethanol, acetone and supercritical CO2: what each one carries, which limits apply and what to demand per lot.
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