fschifano
Member
We've been there with this thread already. Selenium toner has some sort of thiosulfate in it. Usually, the thiosulfate is ammonium thiosulfate and it smells like ammonia. Straight up, KRST concentrate stinks a bit if you stick your nose in the bottle; and unless you're a masochist, you don't do that more than once. Once you have it diluted down to working strength, it hardly smells at all. There's only a very faint whiff of ammonia and it's not all that unpleasant. Now if the Rollie branded concentrate doesn't stink they're probably selling you a less concentrated concentrate, or it doesn't have the thiosulfate, or both. You want to pay more for the "prestige" of the Rollie brand. Knock yourself out!