Non-Toxic Humidity indicator 8% RH (Pack of 1000 pcs)

• Yields accurate testing results within 10 minutes

• Gradation (Ozone): < 90 - 90 to 150 - 150 to 210 - > 210 ug/m3 O3

• Color change (Ozone): white to brown

• Measures free chlorine, alkalinity and pH

• Gradation (Alkalinity): 0 - 80 - 120 - 180 - 240 mg/L CaCO3

• Gradation (Free chlorine): 0 - 0.5

• White paper turns blue-violet in the presence of chlorine

• Gradation (Chlorine): 10 - 50 - 100 - 200 m

• Gradation (Cyanuric acid): 0 - 50 - 100 - 150 - 300 mg/L Cya

• Gradation (Fluoride): 0 - 2 - 5 - 10 - 20 - 50 - 100 mg/L F-

• Color change (Fluoride): red to white