PH Calibration Powder Bag Buffer PH 6.86 for Accurate PH Meter Calibration

VerPetridure PH Calibration Powder Bag Calibration Buffer PH 6.86 Calibration PH Meter
feature:
A bag of pH calibration powder is mixed with 250ML distilled water
The mixed pH solution is the standard buffer solution
Please complete the operation under normal operation. and the child shall complete the operation under the supervision of adults
Scientific blending can be used to calibrate PH meter
Each pack of PH calibration powder is about 2.8g
notes:
All dimensions are measured manually. so please allow a distance of 1-2cm.
Due
to the difference of light and screen. the color of the item may be slightly different from the picture. Please understand that.

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• PH calibration powder bag calibration buffer solution calibration PH meter PH value 6.86
• feature:
• A bag of pH calibration powder is mixed with 250ML distilled water
• The mixed pH solution is the standard buffer solution