Calibration & maintenance solutions in sachets

pH 4.01 and pH 7.01 buffer solutions in 20 mL single-use sachets for pH measurement calibration. These premium calibration buffers provide an accurate tool for measuring pH calibration at 4.01 and 7.01. A temperature chart of the actual pH value at various temperatures is printed on each sachet. Each sachet is stamped with the batch number and expiration date and is made of lightweight aluminum foil ensuring freshness every time you open it. 10 packets (5 each) of 20 mL Ideal for users who do not calibrate frequently Ideal for use in the field due to portability Each sachet is as fresh as the day it was packed Light block packaging prevents oxidation from ultraviolet light that could change the buffer value