Refractive Index Standard Reference Material
Liquid Refractive Index and Brix Standards
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.
| Standard | Refractive 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
| Standard | Brix% | nD | Limit 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 |
