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These test strips detect free iodine, chlorine, and peroxides in solution. Lower levels react with the strips at 5 to 10 ppm. Iodine requires approximately 60 sec to react, and initial reactions show a slight blue color; higher concentrations turn the strip from dark blue to purple. Available in single vials or pack of 12 vials; 100 strips per vial.
These test strips detect free iodine, chlorine, and peroxides in solution. Lower levels react with the strips at 5 to 10 ppm. Iodine requires approximately 60 sec to react, and initial reactions show a slight blue color; higher concentrations turn the strip from dark blue to purple. Available in single vials or pack of 12 vials; 100 strips per vial.