• Abbemat WR/MW, Multi wavelengt refractometer
  • Abbemat WR/MW, Multi wavelengt refractometer with PC
  • Abbemat Heavy Duty, sample is applied with a pipette
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Multiwavelengths Refractometer:
Abbemat MW

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Part number: 89608
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The Abbemat MW digital refractometer enables quick and fully automatic measurements of the refractive index at different measuring wavelengths, e. g. for dispersion and Abbe number determination. For these measurements Abbemat MW can be equipped with up to 8 different wavelengths in the range of 435 nm to 656 nm. This makes the Abbemat MW digital refractometer a versatile instrument for investigations into liquids, polymer bonds and glasses.

Key features

Fully automatic spectral refractometry

  • Measurement of lenses made of plastic or glass, e.g. contact lenses, lenses for digital cameras
  • Quality control of glass and polymers in the production
  • Measurement of dispersion and Abbe numbers: VD, Vd and Ve
  • Characterization of:
  • Liquid immersion oils for microscopes,
  • Acrylic glass, polaycarbonates, Cycloolefine oligomers
  • Optical coatings and adhesives

High performance – reliable results in seconds

  • Abbemat refractometers guarantee the highest stability and analytical performance
  • The built-in Peltier thermostats ensure the measuring temperature is reached in seconds
  • Optimal measurement of the sample temperature just under the prism surface
  • Simple cleaning and no sample carry-over due to the smooth transition between prism and sample holder

Flexible in use

  • As the refractometer and evaluation unit are separate, Abbemat refractometers can be adapted to suit your application
  • For operation under harsh conditions, the evaluation unit is placed a safe distance from the refractometer
  • The formula parser creates user-specific scales

Technical specifications

Measuring range Abbemat MW
Refractive index1.30 nD to 1.72 nD
Temperature10 °C to 70 °C
Refractive index± 0.000001 nD
Temperature0.01 °C
Refractive index± 0.00004 nD
Temperature± 0.03 °C
Temperature stability± 0.002 °C
Additional information
Prism materialYAG (Yttrium-Aluminium-Garnet)
Light sourceWhite light LED
Available wavelengths (max. 8 filters)
  • 589.3 nm Na-D (standard)
  • 435.8 nm Hg-g
  • 480.0 nm Cd-F'
  • 486.1 nm H-F
  • 488.0 nm Ar/Ion
  • 514.5 nm Ar/Ion
  • 532.0 nm Nd/Yag
  • 546.1 nm Hg-e
  • 632.8 nm He/Ne
  • 643.8 nm Cd-C'
  • 656.3 nm H-F'
Minimum sample volumeapprox. 0.2 mL
Measuring time per sample5 seconds (after temp. equilibration / filter change)
Temperature control speed20 seconds (0.5 mL water at lab conditions to 20.00°C)
Customizable scales
  • Linear
  • Polynomial
  • Formula parser
  • One-point calibration
  • Two-point calibration
  • RS-232 (PC)
Wetted partsYAG, FFKM, PP GF 30, Stainless steel
User interfacePC with Microsoft Windows XP/Vista/7
Dimensions195 mm x 250 mm x 145 mm
Weight6 kg



AOAC 898.02
AOAC 898.02
AOAC 905.01
AOAC 920.78
AOAC 920.141
AOAC 920.141
AOAC 921.08
AOAC 921.08
AOAC 932.12
AOAC 932.14, Section C
AOAC 940.09
AOAC 943.05
AOAC 945.102
AOAC 948.10
AOAC 950.04
AOAC 950.13
AOAC 953.16
AOAC 969.18
AOAC 969.38
AOAC 970.15
AOAC 970.59
AOAC 973.65
AOAC 976.20
AOAC 983.01
AOAC 983.17
AOAC 2000.19
ASTM D1218
ASTM D3321
ASTM D4095
ASTM D4542
ASTM D5006


DIN 51423


ISI 06-1e
ISO 8036 : 2006


OIML R 108
OIV MA-AS312-01B


Ph. Eur. 2.2.6 - Refractive index

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