How do I verify Goji berry sulphur residue before shipment?
We want to avoid the classic Goji berry problem: sulphur residue. What is the practical pre-shipment check?Get a third-party inspection at origin with lot-level sampling, and keep a sealed retention sample. For Goji berry ask specifically how they control sulphur residue — a supplier who answers with a procedure, not a promise, is the one to keep.
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