i recently recieved 100ml of test p it wasnt in a steril vile so from what i understand i have to refilter it to make sure its steril i hear whatmen filters are good but when i look them up theres different grades of paper an kinds of filters

you guys got any recommendations on what grades paper or any advice really im taking a shoot in the dark with this also i see filter capsules for 50 bucks is that a good price for one

thanks