15 Pack pH Buffer Calibration Solution Powder 4.00/6.86/9.18 for Precisely Calibrate pH Meter, Easy and Accurate pH Tester Calibration Powder Packets

15 Pack pH Buffer Calibration Solution Powder 4.00/6.86/9.18 for Precisely Calibrate pH Meter, Easy and Accurate pH Tester Calibration Powder Packets

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SKU:
ZB57993
Condition:
New
Availability:
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Description: 15 packs of pH buffer solutions: 5 packs pH4.01(potassium hydrogen phthalate) 5 packs pH6.86 (mixed phosphate) 5 packs 9.18 (borax) Specification: Each powder packet/sachet makes 250ml of solution (distilled or deionized water) Accuracy: ±0.01pH at 25°C Size: 7.5x6.5cm/2.95"x2.56" 3 Steps to use: Please put the powder into a clean 250ml glass beaker. Add 250ml deionized water to the beaker. Stir until the powder has completely dissolved.
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