pH Calibration Solutions
Buy 4oz each of 4.00 and 7.00 buffers separately or as a 2-pack. For testing, pour buffers into a small glass. You do not want to stick the probe of the pH meter into the buffer jars directly because you will eventually sacrifice the accuracy of your buffers.
Expires after 6 months if unopened. Expires after 3 months if opened.
*Available by the gallon. Call or email for more info.*