Bluelab Ph 4.0 500ml
$ 18.90 Out of stock Available in store: Check availability
Available in store
ClosepH instruments must be cleaned and calibrated at least monthly to provide you with the most accurate reading.
pH measuring equipment is calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope)....
pH measuring equipment is calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope)....