Orion Pure Water® pH Test Kits. Thermo Scientific
Manufacturer: Orion (Thermo Scientific)
Many laboratories take pH measurements of "pure water" with low levels of acid, base or dissolved salts. The low conductivity and limited buffering capacity of low ionic strength pure water causes pH electrodes to drift, producing non-reproducible and inaccurate results. Using the Thermo Scientific® Orion™ Pure Water® pH Test Kit provides fast, accurate pH results in high purity waters. This kit contains special low ionic strength buffers for calibration and an additive, called pHISA® Adjustor, to increase sample ionic strength without changing its pH. Recommended for samples such as well water, rain water, distilled/deionized water, boiler feed water, and process water. For best results, a high quality pH electrode such as the Orion ROSS™ 81-02 pH electrode is recommended. Orion Pure Water pH Test Kit includes: four 475 mL bottles Pure Water pH buffer A pH 6.97 (PH4346-2), two 475 mL bottles Pure Water pH buffer B pH 4.10 (PH4346-3), two 50 mL bottles pHISA Adjustor (PH4346-5), one 1 mL syringe, instruction card and Application Procedure No. 501. "pH Measurement in Low Ionic Strength Solutions".