pH Calibration Solution Combo 4.0/7.0
Includes 4oz each of 4.00 and 7.00 buffers. We package these solutions from bulk quantities to get you the best pricing. 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.
Humboldt Beer Works
Humboldt Beer Works is located in Old Town Eureka, on California's beautiful & rugged North Coast.
Locally owned and operated since 2011, and re-established in 2018, we've been committed to offering the highest quality ingredients and equipment, as well as the advice you need to succeed.