For use with pH meters.This bottle contains 1.5oz (45ml) of 4.0 pH buffer solution. For use with REED pH meters.Included table displays what the pH value should be given the buffer solution temperatur..
For use with pH meters.This bottle contains 1.5oz (45ml) of 7.0 pH buffer solution. For use with REED pH meters.Included table displays what the pH value should be given the buffer solution temperatur..