JCSS pH Standard Solution

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pH is a unit necessary to know the degree of acidity and alkalinity of a solution. It represents the hydrogen ion activity in the solution. Because the hydrogen ion activity in the solution cannot be directly measured, the pH is measured by comparing with the pH of one aqueous solution. Therefore, clear pH definitions and standards are important, so the ISO (International Organization for Standardization) and the JIS (Japanese Industrial Standards) specify the measurement method for pH 1).

JCSS (Japan Calibration Service System) is a traceability system based on the Measurement Law of Japan. It is developed from time to time and used as a reference material for various official methods in Japan. JCSS reference materials are SI traceable CRM (certified reference materials) that ensure traceability to specific reference materials, manufactured by CERI (Chemicals Evaluation and Research Institute, Japan), a designated calibration institute under the Measurement Law of Japan. JCSS standard solutions are accompanied by a calibration certificate bearing the IAJapan and MRA (Mutual Recognition Agreement) symbols, and the concentrations on the calibration certificate are accepted internationally through the MRA of ILAC/APAC.

  1. Ohata, M. et al.: AIST Bulletin of Metrology, 3-4, 657 (2005).

Composition

Code Product Name Composition pH
151-01845 Oxalate pH Standard Solution KH3(C2O4)2・2H2O in H2O 1.68
166-12141 Phthalate pH Standard Solution C6H4(COOK)(COOH) in H2O 4.01
163-12151 Phosphate pH Standard Equimolal Solution KH2PO4 - Na2HPO4 in H2O 6.86
166-17445 Phosphate pH Standard Solution KH2PO4 - Na2HPO4 in H2O 7.41
203-08771 Tetraborate pH Standard Solution Na2B4O7 in H2O 9.18
037-16145 Carbonate pH Standard Solution NaHCO3 - Na2CO3 in H2O 10.01

JCSS

JCSS (Japan Calibration Service System) is a traceability system based on the Measurement Law of Japan. It is developed from time to time and used as a reference material for various official methods in Japan. JCSS reference materials are SI traceable CRM (certified reference materials) that ensure traceability to specific reference materials, manufactured by CERI (Chemicals Evaluation and Research Institute, Japan), a designated calibration institute under the Measurement Law of Japan. JCSS standard solutions are accompanied by a calibration certificate bearing the IAJapan and MRA (Mutual Recognition Agreement) symbols, and the concentrations on the calibration certificate are accepted internationally through the MRA of ILAC/APAC. Fujifilm Wako provides JCSS reference materials such as inorganic standard solutions (ion/metal standard solutions), organic standard solutions, and pH standard solutions.

JCSS calibration certificate

JCSS calibration certificate

Features

  • CRM with guaranteed SI traceable characteristic values (concentration, factor, etc.)
  • By valuing our products using specific reference materials and conducting concentration reliability tests on the valued products at CERI, we maintain the high reliability of the value.
  • The calibration certificate bears the IAJapan and JCSS symbols, indicating that it meets all the requirements for CRM under ISO 17034.
  • The calibration certificate bears the MRA symbol, which indicates that the listed characteristic values are internationally acceptable.

Traceability of JCSS

Traceability of JCSS

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Ion Standard Solution (Single Component)

Ion Standard Solution (Mixture)

Metal Standard Solution (JCSS)

Metal Standard Solution (for Atomic Absorption Spectrometry)

For research use or further manufacturing use only. Not for use in diagnostic procedures.

Product content may differ from the actual image due to minor specification changes etc.

If the revision of product standards and packaging standards has been made, there is a case where the actual product specifications and images are different.

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