Quote Originally Posted by Photo Engineer View Post
You know, that price for Ammonium Thiosulfate looks like the price for the powder or crystalline form. The usual Ammonium Thiosulfate used in the photo industry is supplied as a solution in water and is about 10x - 100x lower in price, if available in Australia. You might want to check that out.

Thanks, I'll double check. The supplier was a science/lab supplies specialist so now that you mention it that sounds right.

FYI, I strained my bleach and did another few rolls which seemed to get rid of most of the spotting. Still a bit dirty but much better.