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Buy from a reputable seller for anything important, instead of amazon. Or, there are apparently at-home testing chemicals that look simple to use. I haven't do
by heeton 2y ago
Buy from a reputable seller for anything important, instead of amazon.
Or, there are apparently at-home testing chemicals that look simple to use. I haven't done it myself though.
- echoangle 2y agoThe question is who is reputable. Even when buying from a well known store, I don’t know how they audit their suppliers, because the paper is bound to be made by some company I’ve never heard of.