All Myron L instruments are factory calibrated with Standard Solutions of known conductivity/TDS value and (when appropriate) with pH buffer values 4, 7 and 10. These solutions and buffers are traceable to the U.S. Government’s National Institute of Standards and Technology. Periodic…

Accurately calibrate your instruments with Myron L Company Standard Solutions. All solutions have an accuracy of +/-1% based on values published in the International Critical Tables and traceable to the National Institute of Standards and Technology.