Hach Fully Certified pH and Conductivity standard solutions

Hach Lange GmbH is accredited as registered Reference Material Producer according to DIN EN ISO 17034:2017 (D-RM-15184-01-00) and registered as Calibration Laboratory according to DIN EN ISO/IEC 17025:2018 (D-K-15184-01-00) for pH and Conductivity standard solutions.

  • Reference Materials are used in all stages of the measurement process, including method validation, calibration, and quality control. They are also used in interlaboratory comparisons for method validation and for assessing laboratory proficiency.

  • All pH standards are formulated in compliance with NIST and IUPAC specifications.

  • Certified conductivity standards are prepared and calibrated according to demal scale laid down by the International Organization of Legal Metrology (OIML – Recommendation No. 56).

  • The use of standards manufactured by an accredited Reference Material producer provides complete confidence in the traceability chain and calculated uncertainties.



Select the below buffer solution and shop now

  Part Number
   Description
S11M001
  pH 1.679 Certified Reference Material CRM
 Buffer Standard Solution, IUPAC, 500 mL
 S11M002
   pH 4.005 Certified Reference Material CRM
  Buffer Standard Solution, IUPAC, 500 mL
  S11M003
   pH 6.865 Certified Reference Material CRM
  Buffer Standard Solution, IUPAC, 500 mL
  S11M004
   pH 7.000 Certified Reference Material CRM
  Buffer Standard Solution, 500 mL
  S11M005
   pH 7.413 Certified Reference Material CRM
  Buffer Standard Solution, IUPAC, 500 mL
  S11M006
   pH 9.180 Certified Reference Material CRM
  Buffer Standard Solution, IUPAC, 500 mL
  S11M007
   pH 10.012 Certified Reference Material CRM
  Buffer Standard Solution, IUPAC, 500 mL
  S11M008
   pH 12.45 Certified Reference Material CRM
  Buffer Standard Solution, IUPAC, 500 mL
  S51M001
   111.3 mS/cm Certified Reference Material CRM
  OIML Conductivity Standard Solution, KCl 1D, 500 mL
  S51M002
   12.85 mS/cm Certified Reference Material CRM
  OIML Conductivity Standard Solution, KCl 0.1D, 500 mL
  S51M003
   1408 μS/cm Certified Reference Material CRM
  OIML Conductivity Standard Solution, KCl 0.01D, 500 mL
  S51M004
   1015 μS/cm Certified Reference Material CRM
  Conductivity Standard Solution, 0.05% NaCl, 500 mL
  S51M013
   25 μS/cm Certified Reference Material CRM
  Conductivity Standard Solution, NaCl, 250 mL



Need a certificate of analysis for the acquired buffers? Download them specifically for your catalogue and lot number of the given buffer: Hach Certificate of Analysis Online Request Form

Sample of how the certificates look: Certificate of Analysis Sample