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Boldenone undecylenate

You need to drop only tiny amount of the test substance into the vials, no more than the amount of test reagent inside. One drop to a few small drops is enough. The initial color in vial A is orange changing to light brown and the color in vial B is dark orange changing to brown. Watching the color under normal light will not give you conclusive results. You need to watch vial B under UV light (you need 365 nm) only when you see the yellow fluorescence then you know that you have boldenone undecylenate.

It is simple pass or fail test. Any discoloration under day light will mean that the sample contains other chemicals. Vial A after a while it will develop yellow fluorescence similar to vial B, the initial fluorescence is blue/violet. The fluorescence will last for at least 48 before starting to diminish, while many other steroids will lose fluorescence within hours. For example primobolan will loose fluorescence within 24 hours. This might help to distinguish them.

Vial A developed later yellow fluorescence similar to vial B. If you are having problem to identify boldenone this interesting feature might help you.

Vial B under 365 nm UV light

Vial B under 365 nm UV light

Vial B under 365 nm UV light