• Abbemat Performance and Performance Plus
  • Abbemat T-Check

Abbemat Performance and Performance Plus Line

Abbemat digital refractometers allow fast and non-destructive refractive index measurements. They are factory calibrated with official standards from the Physikalisch-Technische Bundesanstalt (PTB, National Metrology Institute of Germany). Refractive index results from Abbemat 300/350 are accurate to ±0.0001 nD; Abbemat 500/550 provides an accuracy of ±0.00002 nD.
All Abbemat 300/500 refractometers provide full compliance with 21 CFR Part 11, with user levels, audit trail, and forgery-proof data export. Anton Paar also provides a qualification documentation package (IQ/OQ/PQ). The Abbemat T-Check feature precisely calibrates and adjusts the surface temperature of the measuring prism of all Anton Paar refractometers.

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Key Features

Easy operation

  • Abbemat 350/550 refractometers are set up conveniently using intuitive touchscreen navigation
  • Abbemat 300/500 have a color LCD screen and membrane keys which are resistant to spillage and dirt and can be operated even when wearing gloves
  • A reminder for test measurements or adjustments can be set at user-defined intervals
  • Automatic warning if the sample volume is not large enough for a valid measurement
  • No sample preparation, readings within seconds
  • A quick wipe cleans the prism after each measurement 


Compliance and traceability

  • Full compliance with 21 CFR Part 11
  • Compliant with international standards such as ASTM, ICUMSA, OIML, AOAC, DIN/ISO, FDA, ISI, JIS and pharmacopoeias
  • History and current status of results via the result memory
  • Adjustment and check history, check intervals and validity checks for each measurement


For all samples

  • Independent of sample properties you can measure:

    • all samples from liquids to pastes, polymers to solids
    • turbid, colored or opaque samples
    • liquids containing air bubbles or solid particles

  • No influence from humidity, temperature or vibrations
  • A wide range of scales are stored in the Abbemat for converting refractive index into concentrations, etc.

Technical Specifications

Measuring ranges Refractive index scale (RI)Abbemat 300/350Abbemat 500/550
Range nD1.26 to 1.721.26 to 1.72
Resolution nD± 0.00001± 0.000001
Accuracy nD 1)± 0.0001± 0.00002
Measuring ranges Brix scale
Range0 to 100 %0 to 100 %
Resolution0.01 %0.001 %
Accuracy0.05 %0.015 %
Measuring range Temperature
Range4 to 85 °C4 to 85 °C
Temperature probe accuacy1)± 0.05 °C± 0.03 °C
Temperature probe stability1)± 0.002 °C± 0.002 °C
Additional information
Wetted partsFFKM, PP GF 30, stainless steel
Light sourceLED light source, average lifetime > 100,000 h
Wavelength589 nm
Minimum sample amountapprox. 0.2 mL
Measuring time5 seconds per sample (after temp. equilibration)
Scales/methodsSugar scales, syrup and honey scales, alcohol scales, urine scales, serum scales, more than 70 scales available
  • RS-232, CAN-bus, 3 USB ports
  • Ethernet and VGA connector (Performance Plus line only)


(W x H x D)

300 mm x 145 mm x 330 mm (11.8 in x 5.7 in x 13 in)
Weight6.5 kg (14.3 lb)
1) valid at refractometric standard conditions (T = 20 °C, λ = 589 nm, ambient temperature = 23 °C)



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


DIN 51423


ISI 06-1e


OIML R 108
OIV MA-AS312-01B


Ph. Eur. 2.2.6 - Refractive index


USP 831 - Refractive index

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