R rdlisby New member Apr 10, 2010 #1 How do you tell the difference between a Neptune Lab grade PH Probe and a Neptune standard grade PH Probe? I have read codes on the little label wrapped around the cables, but I am not sure what they mean.
How do you tell the difference between a Neptune Lab grade PH Probe and a Neptune standard grade PH Probe? I have read codes on the little label wrapped around the cables, but I am not sure what they mean.
