ATR-L Dispersion Refractometer
Multiple wavelength digital refractometer for dispersion measurements.
The ATR-L is a digital, fully automatic spectral refractometer used to determine the refractive index of liquids of various viscosities regardless of opacity or color. The stainless steel measuring head allows for a minimum sample volume of 0.3 ml and is separate from the electronic control unit.
The ATR-L includes a built-in Peltier system and a precision thermometer for fast, precise temperature control. The use of discrete LEDs provides automatic dispersion measurement between 350nm and 1000nm at seven wavelengths making it possible to implement any combination of customer-specified wavelengths within the instrument and carry out quasi-spectral measurements in close to real-time.
Features
- High-precision refractometer
- Automatic dispersion measurement
- Seven fixed wavelengths with the full range of visible light
- Automatic ABBE number measurement
- Internal Peltier temperature control
- Able to discriminate ingredients with the same refractive index
- Measures liquids and solids
- Ideal for research and development
The ATR-L multi-wavelength refractometer can be used to determine product purity and is therefore ideally suited for determining sample quality. Material characterization can be used to determine the quality of products such as perfume, wine, or other alcoholic beverages. With an available cover for the measurements of solid samples, quality control of hydrophobic and hydrophilic intraocular lenses (IOL) is possible.
Since the measuring principle is also sensitive to absorption, the measurement not only provides information about the content of the analyte but also valuable information about color and turbidity.
Applications for the ATR-L Refractometer are possible in research and development, medical research, plastic lenses, contact lenses, proteins, communication technology, polymer materials, special optical liquids, glasses, and adhesives.
| Measuring scales | Refractive index (RI) |
| Measuring range | 1.33200 – 1.70000 RI* / 100% Brix |
| Resolution | 0.00001 RI* / 0.01 Brix |
| Precision | ± 0.00004 RI* / ± 0.03 Brix |
| Reproducibility | ± 0.00004 RI* / ± 0.03 Brix |
| Measuring time per sample | 20 sec for all 7 wavelengths after temperature stabilization; single sample measurement |
| Ambient temperature | + 15° to + 40°C |
| Automatic temp. compensation Operational temperature Temperature stability Temperature precision |
Solid state Peltier-thermostatisation + 10°C to + 80°C 0.01°C ± 0.03°C |
| Detector | CCD-linear array with 2048 elements |
| Sample compartment | Used materials: stainless steel, Black Delrin®, Teflon®, Viton®, FFKM sealing |
| Prism | YAG |
| Prism | YAG |
| Light source/wavelength | 7 discrete LED’s with fixed wavelengths 400, 450, 490, 545, 590, 660, 700 nm (others on request), wavelength accuracy ± 2 nm |
| Display | LCD, 16 x 16 characters, back-illuminated |
| Operation | 20 key membrane including function keys |
| Interfaces /Communication | 1 x RS232 C, 1x parallel, USB optional |
| Standards | European and international Pharmacopoeia, various ASTM, ISO, and DIN standards |
| Dimensions / Weight | Measuring head, stainless steel: 260 x 190 x 220 mm (w x h x d); control unit: 220 x 110 x 290 mm (w x h x d); complete unit 8 kg |
