Review on ๐งช Set of 15 PH Calibration Buffer Solution Powder Packs for Accurate pH Meter Calibration - Make 250ml of 4.00pH, 6.86pH, and 9.18pH Solutions to Calibrate Your PH Tester by Heather Schmidt
PH CALIBRATION BUFFER POWDER
The product worked as advertised, I had to recalibrate my pH pens and they worked great. Three stars for the condition in which the box got to me. looked old and used.
- One year trial
- Available in white only
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