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Hello, I know it has already been described several times in the forum. But does anyone have any tips or tricks that they could explain? Otherwise, I would be happy to receive a step-by-step guide.

Hi everyone, I need an urgent advice from a chemist. During the delivery process from ordered A-Oil the vendor didn't seal the package correctly, so all the liquid has spread inside the package. As stealth, clothing was repackaged and this is now soaked with all the oil. It is a large amount...

hello , there are some BMK pouders for sale I think 4 different CAS numbers I was wonder how we know if these CAS nr are still legal or not ? also how do they do it at the border to check if a substance is legal or not . do they just belive the CAS nr that is given on the item ?