2Bags PH4.00 PH7.00 Buffer Powder For PH Test Meter Measure Calibration Solution

Description :2Bags/Lot PH4.00 and PH7.00 Buffer Powder For PH Test Meter Measure Calibration Solution The contents will make up to 250ml each. Just add water or distilled water. Directions for use : 1. Completely emply the powder into a clean 250ml glass beaker. 2. Add 250ml of Deionized Water to the beaker. 3. Stir untillthe powder has completely dissolved. Package includes : 1 x PH4.00 buffer powder 1 x PH7.00 buffer powder Details pictures :