I have been reading a fair bit on here and i couldnt find it .My problem is that i have to ship liquid chlorine from 500 miles away so i would like to buy it in reasonable amounts . The room i will keep it in is well ventilated but will have a temp of anything upto 85-90 in the day time .The question i have how to test the strentgh of the stored chlorine as it drops off over time rather than just putting it in the pool and check the readings can di it under a more controlled way so i can add it to the pool ocording to strentgh .