Purdue Betadine Antiseptic Solution 16 oz. (BSO16P). Purdue Betadine Antiseptic Solution is an important first-line defense against topical infections. The active ingredient in Betadine Microbicides is povidone-iodine 10% (1% available iodine) which is active against a broad spectrum of pathogens, in vitro. It is used for the preparation of the skin prior to surgery and it helps reduce bacteria that potentially can cause skin infection. 1/EA 12EA/CS. Priced per each. FREE Shipping!