MEASUREMENT RANGE, EXTENDED STANDARD EXTENDED, DO NOT EXTEND 0.05 ? 0.8% DO NOT EXTEND, NO. OF PUMP STROKES 0.5 (50 ML), VOLUME CORRECTION FACTOR (VCF)* 1.0, SAMPLING TIME 0.5 MINUTE PER ½ PUMP STROKE (50 ML), COLOR CHANGE YELLOW ? GREENISH BLUE, SHELF LIFE 2 YEARS, STORAGE CONDITION BELOW 10?C (50?F), CALIBRATION CONDITION CALIBRATED AT 20?C (68?F) AND 50% RH., ACTIVE REAGENT(S) MAGNESIUM PERCHLORATE, ACID, PH INDICATOR