I have a reclaimed shallow well on property, and have recently switched to NaDCC (sodium dichloro isocyanurate)pool shock, and away from calcium hypochlorite for a stored chlorine water treatment option... using an over the counter pool chlorine test strip, and the reloading powder measure, was able to titrate an acceptable to me 3ppm chlorine reading at 30sec with a partially filled dipper fabricated from a .22lr case... a post on another forum posted a link to a much more usable low range test paper, and I thought it was worth passing forward

http://www.amazon.com/gp/product/B0026DU...IUWWWFVIXJFLUSW

hopefully much more accurate range than what I used... purple
does anyone have a other recommendation? thanks