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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 va..

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 va..

20 individual pH buffer powder packs for quick and accurate on-site calibration. Simply mix the powder with 8.45oz (250mL) of deionized water and stir..

20 individual pH buffer powder packs for quick and accurate on-site calibration. Simply mix the powder with 8.45oz (250mL) of deionized water and stir..