Formulated to provide precise pH determinations, these buffer solutions which are standardized against N.I.S.T.-certified reference samples, are ideal for calibrating electrodes and pH meters. The buffers are color-coded to avoid error and accurate to within ±0.02 pH at 25°C (77°F). Each buffer contains a preservative/mold inhibitor and a shrink-sealed cap to prevent contamination and leakage. Temperature compensation charts are included with each buffer solution. The shelf life of the buffer solutions are 1 Year.
† All dollar amounts on this site are shown in US currency.
Note: FOR NIST ON PH SOLUTIONS ADD "-NIST" TO MODEL NUMBER AND ADD 2ND LINE ITEM READING CAL-PH. THE CHARGE IS $25 PER ORDER FOR NIST CERTIFICATE OF CONFORMANCE. Certificates are not available for Deionized Water or Individual Use Packets. (OPTIONS SHOWN IN THIS "NOTE" ABOVE ARE PRICED IN US$) Ordering Example: (1) PHA-7 7.00 pH buffer solution , (1) PHA-4 4.00 pH buffer solution = $16.00
