Sodium Thiosulfate, Fine Crystals, 99.5% min., 500 Grams (1.1 lb.)

Product did exactly what I needed it to do.It rapidly lowered the Chlorine levels in my hot tub.

Huge money saver- mix 4oz by weight into 1 gallon of distilled water. Use to dechlorinate tap water to fill aquariums. 5ml of this solution will treat 10 gallons of tap water.

Gets out iodine stains! Our vet prescribed iodine to our dog and needless to say, he didn’t like it and slung iodine everywhere. This mixed with water removed the iodine when literally nothing else would work! Doesn’t take much.

Good product...dont take a long drive while taking this unless your wearing depends...cleans you out fast!!!

I received what I ordered, the product matches the description, thank you!!

It didn't matter for my use case, but what I received was not powdered as the ad described.I used this to neutralize chlorine bleach residue after using bleach solution to sanitize some items. The crystals readily dissolved in water, so It worked fine for my needs, even if not as described.

all good

Have nothing to compare to. It worked for my application.