Keep your pH Meter accurate with these pH Calibration Solutions.

pH Calibration Solutions (Set of 2) Includes 4oz each of 4.00 and 7.00 buffers. We package these solutions from bulk quantities to give you just the amount you will need so you don't have tons of extra solution left over after it expires. This also means a better price for you! When using the solution to test your pH meter, pour the amount you need into a small glass. Be sure you don't stick the end of the probe into the plastic bottle as it will compromise the accuracy of your buffers.

Expires after 6 months if unopened.

Expires after 3 months if opened.