Hanna HI77400P pH 4.01 and 7.01 Calibration Buffer Sachets (10 x 20mL, 5 Each) env-tent Water Pump (450 GPH)
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Hanna HI77400P pH 4.01 and 7.01 Calibration Buffer Sachets (10 x 20mL, 5 Each) env-tent Water Pump (450 GPH)HI77400P is a set of premium quality pH 4. 01 and 7. 01 calibration buffer solutions. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna's line of calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet. The HI77400P is for 5 sachets of pH 4. 01 and 5 sachets of pH 7. 01 with
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