Measuring Range 3 to 6% 6 to 24% Number of Pump Strokes 1 1/2 Correction Factor 1/2 1 Sampling Time 2 minutes per pumpstroke Detecting Limit 2% (n=1) Color Change Black → White Reaction Principle O2 + 4TiCl3 +6H2O → 4TiO2+ 12HCl Coefficient ofVariation 5% (for6 to 24 %) ShelfLife 3Years Correctionsfor temperature & humidity Unnecessary Store the tubes at cool and darkplace.