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  Pure Water™ pH Buffers & pHISA® Adjustor



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 Pure Water pH Test Kit provides fast, accurate pH results in high purity waters. Recommended for samples such as well water, rain water, distilled/deionized water, boiler feed water, and process water.


   Product Detail


  • Increases measurement accuracy
  • Reduces electrode drift
  • Eliminates contamination of sample

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 ROSS Ultra® glass-body pH electrode, Cat. No. 8102BNUWP is recommended.

Thermo Scientific Pure Water pH Test Kit includes:

  • four 475 mL bottles Pure Water pH buffer A pH 6.97 (700702)
  • two 475 mL bottles Pure Water pH buffer B pH 4.10 (700704)
  • two 50 mL bottles pHisa Adjustor (700003)
  • one 1 mL syringe, instruction card and Tech note 501. ""pH Measurement in Low Ionic Strength Solutions""
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 09-2013-003   Thermo Scientific Pure Water pH Buffers & pHISA Adjustor - Thermo Scientific pHISA ADJUSTOR, 5 X 60M - 700003 700003 $542.60
 08-7007-020   Thermo Scientific Pure Water pH Buffers & pHISA Adjustor - Thermo Scientific PURE WATER pH BUFFER A/pH 6.97,4X475M - 700702 700702 $832.21
 08-7004-020   Thermo Scientific Pure Water pH Buffers & pHISA Adjustor - Thermo Scientific PURE WATER pH BUFFER B/pH 4.10, 4X475M - 700402 700402 $846.86
 08-7009-020   Thermo Scientific Pure Water pH Buffers & pHISA Adjustor - Thermo Scientific PURE WATER pH BUFFER C/pH 9.15, 4X475M - 700902 700902 $846.86
 08-7000-010   Thermo Scientific Pure Water pH Buffers & pHISA Adjustor - Thermo Scientific PURE WATER pH TEST KIT - 700001 700001 $846.86
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