Residual chlorine test strips Aqua Check HC (100 sheets x 6 rolls) 1 box (100 sheets x 6 rolls)

No pretreatment is required, and measurement results can be obtained in a short time (10 to 60 seconds). Both the container and the contents can be incinerated and are made of environmentally friendly materials. Measurement items: High concentration free residual chlorine Coloring agent: Tetramethylbenzidine Measurement range: 0, 25, 50, 100, 200, 400, 600mg/L Quantity: 1 box (100 sheets/bottle x 6 bottles) Test paper size (mm): 80 x 5 Expiration date: 2 years from date of manufacture RoHS2 (EU)2015/863 compliant [About RoHS]