Refractive Index Standard Reference Material

 

Refractive index determination with laser interferometer
Refractive index determination with laser interferometer

Liquid Refractive Index and Brix Standards

 

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KEM does not only supply refractometers, it has was well a JCSS (Japan Calibration Service System) Accredited Calibration Laboratory (assessed on JIS Q 17025:2000 (ISO/IEC 17025:1999) where a wide range of certified refractive index standard reference material is produced. KEM has the JCSS accreditation number 0115. The refractive index of these standards is determined with a laser interferometer. All standards come with a certificate bearing the JCSS symbol which assures their traceability to National Measurement Standards of Japan which are recognized worldwide through the ILAC and APLAC MRA.

 

Certified Refractive Index Standard Reference Material
Certified Refractive Index Standard Reference Material

The refractive index standard reference material is always supplied as a set of two 10 mL vials: 1 vial of standard reference material water and one vial of standard reference material with a different refractive index (organic solvent). The refractive index standard reference material has a shelf life of 12 months.  The certified Brix standard reference material is supplied in sets of two 10 mL vials. This type of standard reference material has a shelf life of 1 month only.

 

StandardRefractive Index (nD at 20°C)Limit of error (nD)Ordering number
Water / 2 bottles 1.33299 ±0.00003  12-01610-02
Iso-Octane/Water/ea. 1 bottle 1.391.. ±0.00003  12-04077-02
Dichlorotoluene /Water/ea. 1 bottle 1) 1.546.. ±0.00003 12-04080-02
Dibenzyl ether/Water/ea. 1 bottle 1) 1.563.. ±0.00003 12-04081-02
1-Bromonapthalene/Water/ea. 1 bottle 1) 2) 1.658.. ±0.00003 12-04082-02

1) Not suitable for the RA-130 Refractometer
2) Not suitable for the RA-600 Refractometer 

 

StandardBrix% | nDLimit of error (nD)Ordering number
5% Brix solution / 2 bottles 5% Brix | 1.340.. nD ±0.013% Brix | ±0.00002 nD 12-04083-10
10% Brix solution / 2 bottles 10% Brix | 1.347.. nD ±0.013% Brix | ±0.00002 nD 12-04083-11
20% Brix solution / 2 bottles 20% Brix | 1.363.. nD ±0.013% Brix | ±0.00002 nD 12-04083-12
30% Brix solution / 2 bottles 30% Brix | 1.381.. nD ±0.013% Brix | ±0.00002 nD 12-04083-13
40% Brix solution / 2 bottles 40% Brix | 1.399.. nD ±0.013% Brix | ±0.00002 nD 12-04083-14
50% Brix solution / 2 bottles 50% Brix | 1.420.. nD ±0.013% Brix | ±0.00002 nD 12-04083-15
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