Amazon.com : Chloro-Guard Chlorine. Pool Grade Liquid Chlorine. 12.5% Concentrated Solution. Sanitizes Pool Water to Eliminate Harmful Bacteria.-4 Gallon case : Patio, Lawn & Garden
ValidCheck Chlorine 1,5 mg/l | Lovibond
PIChE - How to make strong (0.5%) chlorine solution from... | Facebook
Sodium Hypochlorite, 5% Available Chlorine, Solution, Reagent, Spectrum Chemical, Quantity: 500 mL | Fisher Scientific