What is the method that Hach glass pH electrodes follow and is that method EPA compliant?

Document ID

Document ID TE4946

Version

Version 3.0

Status

Status Published

Published Date

Published Date 25/01/2018
Question
What is the method that Hach glass pH electrodes follow and is that method EPA compliant?
Summary
pH method and compliance.
Answer
All Hach glass pH electrodes use Method 8156 which is USEPA Accepted. The reference methods that this method follows are EPA 150.1, 150.2; SM 4500-H+ B; ASTM Method D1293-95, and ASTM Method D1293-84(90)/(A or B).