Dropping back in to say I tested some Mast P, Test P, Test E, and my pharma Test C (prescribed so I used this as a control). All showed up exactly as expected on the reagent tests. So depending on the compound, Liebermann’s, Mandelin’s, Marquis, and Mecke reagents all work well for validating gear as well.
Winny should turn orange-green in Mandelin’s and yellow-brown in Liebermanns according to data from this study (although it’s sadly paywalled)
Chiong, D., Consuegra-Rodriguez, E., and Almirall, J., “The Analysis and Identification of Steroids,” Journal of Forensic Sciences , Vol. 37, No. 2, 1992, pp. 488-502