ATR L Spectral-Refractometer for automatic dispersion measurement
Article Number03751
Unit of MeasurePiece
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 wavelength after temperature stabilisation; single sample measurement
Ambient temperature + 15° to + 40°C
Automatic temperature 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
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 Mesuring 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
Automatic dispersion measurement at 7 wavelengths over the full range of visibile light (intermediate values interpolated)**;
Powerful, internal Peltier temperature control guarantees the fastest measurements with highest accuracy
Applications often used
• Determination of product purity
• Quality control
• Product fingerprinting
• Optical material characterization
Typical applications of the model
• Measurement of dispersion and calculation of Abbé number
• Measurement of lenses made of plastic or glass
• Quality control of hydrophobic and hydrophilic intraocular
lenses (IOL)
• Standard test method for refractive index and refractive index dispersion determination of hydrocarbon liquids accord. to ASTM 1218
• Testing of fiber-optic components
• Material engineering of polymer compounds