Digital refractometers with Peltier temperature control

DR6000-T

Introducing the DR6000-T Refractometer – a powerful all-rounder designed to meet the most demanding measurement needs across various industries. Equipped with cutting-edge features and unparalleled precision, the DR6000-T ensures highly accurate results, even for complex and turbid samples.

Key Features:

  • Advanced Peltier Temperature Control: The DR6000-T models come standard with an internal Peltier element that precisely controls the sample temperature up to 8
    0°C, ensuring consistent and reliable measurements.
  • Versatility for Different Needs: Choose from four models, each designed to meet specific accuracy, resolution, and measurement range requirements while maintaining the same ease of operation and functionality.
  • Measurement of Turbid and Highly Viscous Samples: Achieve accurate results with challenging sample types, thanks to its advanced technology.
  • Chemical-Resistant Construction: The DR6000-T is built for durability with a sapphire measurement prism and a stainless steel measuring tray, making it resistant to chemical exposure.
  • User-Friendly Interface: The intuitive touch-screen display allows for seamless navigation, enabling quick setup and efficient operation.
  • Comprehensive Data Management: It offers complete data recording, including audit trails, and flexible export options, ensuring compliance with global standards.

Typical Applications:

The DR6000-T is the ideal solution for a wide array of industries:

  • Pharmaceuticals: Identity testing, purity control, and concentration determination of raw materials and final products.
  • Food & Beverage: Determine sugar content in juices, alcohol-free drinks, or the alcohol/extract content in beer, wine, and spirits.
  • Chemical and Petrochemical: Track chemical processes, test stability, and perform routine high-throughput analysis.
  • Hospitals and Pharmacies: Compliance checks with pharmacopeia standards and analysis of body secretions.
  • Automotive and Metalworking: Ensure quality control and production consistency.

Key Benefits:

  • Characterization tests in R&D
  • Tracking production processes
  • Stability testing
  • Solids content and purity analysis (in combination with a polarimeter)
  • Quality control for incoming and outgoing goods

With the DR6000-T Refractometer, industries ranging from pharmaceuticals to automotive can trust in its robust design, precise measurements, and seamless data integration to improve productivity and maintain the highest quality standards.

DR7000 Series: Precision Redefined for Laboratory Technicians

In a world where laboratory accuracy is paramount, the DR7000 series refractometers elevate standards for reliable, precise measurements. Designed for environments with stringent regulations, the DR7000 offers enhanced features that simplify processes, ensuring compliance and operational ease.

With all measurement-critical components sealed against dust, the DR7000 series protects its sensitive electronics and optics from contaminants, delivering unmatched longevity and accuracy. Newly designed optics provide optimal temperature control, ensuring high measurement precision without thermal interference. A modernized sample chamber now features a green LED indicator to signal when the sample’s temperature is stabilized and the system is ready for measurement, offering an intuitive, user-friendly experience.


Key Benefits of the DR7000 Series

  • Enhanced User Interface: A 7.0-inch capacitive touchscreen with a revamped user interface enables smooth, responsive control.
  • Improved Optics and Temperature Control: Precision temperature management enhances measurement accuracy, reducing environmental interference.
  • LED Status Indicator: An LED ring around the sample chamber visually communicates temperature stability and readiness.
  • Replaceable Drying Cartridge: Minimized condensation with a replaceable drying cartridge extends component longevity.
  • Optimized Ventilation: A new ventilation design safeguards internal electronics and optics from heat and dust.

The DR7000’s modular architecture allows easy maintenance and component replacements, enhancing the refractometer’s service life.


Advanced Data Management

With sophisticated security and user management, the DR7000 series meets stringent regulatory requirements:

  • Data Security: Tamper-proof data storage and secure network access protect the integrity and confidentiality of your records.
  • 21 CFR Part 11 and EU GMP Annex 11 Compliance: The DR7000 refractometers support compliant data storage, with user access controlled by secure login.
  • User Levels and Audit Trail: Configurable user rights, a comprehensive audit trail, and protected data storage meet industry standards.

Specifications Overview

Measurement Data

DR71000-P DR7200-P DR7300-P DR7400-P
Scales Refractive index (nD)
Concentration of sucrose, glucose, fructose, and invert sugar (%Brix)
User-defined (unlimited)
 Refractive index (nD)
Concentration of sucrose, glucose, fructose, and invert sugar (%Brix)
User-defined (unlimited)
 Refractive index (nD)
Concentration of sucrose, glucose, fructose, and invert sugar (%Brix)
User-defined (unlimited)
 Refractive index (nD)
Concentration of sucrose, glucose, fructose, and invert sugar (%Brix)
User-defined (unlimited)
Measurement Range nD 1.3000 – 1.5800
0–95 %Brix
nD 1.3000 – 1.5800
0–95 %Brix
nD 1.30000 – 1.72000
0–95 %Brix
nD 1.30000 – 1.72000
0–95 %Brix
Measurement Accuracy nD ±0.0001
±0.1 %Brix
nD ±0.00002
±0.02 %Brix
nD ±0.00002
±0.02 %Brix
nD ±0.00002
±0.02 %Brix
Resolution nD 0.0001
0.1 %Brix
nD 0.00001
0.01 %Brix
nD 0.00001
0.01 %Brix
nD 0.00001
0.01 %Brix
Audit Trail Functionality None Completely available None Completely available
Measurement Period Approx. 2 seconds Approx. 2 seconds Approx. 2 seconds Approx. 2 seconds
Measurement Prism Sapphire Sapphire Sapphire Sapphire
Light Source LED (589 nm)  LED (589 nm)  LED (589 nm)  LED (589 nm)
Sample Volume/Filling Quantity ≈ 0.3 ml ≈ 0.3 ml ≈ 0.3 ml ≈ 0.3 ml
Components in Contact with Sample Sapphire, PTFE, stainless steel
(X2CrNiMo 17-12-2)
Sapphire, PTFE, stainless steel
(X2CrNiMo 17-12-2)
Sapphire, PTFE, stainless steel
(X2CrNiMo 17-12-2)
Sapphire, PTFE, stainless steel
(X2CrNiMo 17-12-2)

Temperature Data

DR71000-P DR7200-P DR7300-P DR7400-P
Temperature Measurement Integrated Peltier sample
temperature control system
Integrated Peltier sample
temperature control system
Integrated Peltier sample
temperature control system
Integrated Peltier sample
temperature control system
Temperature Measurement Range 10–60 °C 10–80 °C 10–80 °C 10–80 °C
Temperature Measurement Accuracy ±0.1 °C ±0.1 °C ±0.03 °C ±0.03 °C
Temperature Compensation Automatic temperature compensation for %Brix according to ICUMSA selectable
Optional customer-created temperature compensation
Automatic temperature compensation for %Brix according to ICUMSA selectable
Optional customer-created temperature compensation
Automatic temperature compensation for %Brix according to ICUMSA selectable
Optional customer-created temperature compensation
Automatic temperature compensation for %Brix according to ICUMSA selectable
Optional customer-created temperature compensation
Temperature Measurement With integrated temperature sensor Pt100 With integrated temperature sensor Pt100 With integrated temperature sensor Pt100 With integrated temperature sensor Pt100
Temperature Measurement Resolution 0.1 °C 0.01 °C 0.01 °C 0.01 °C
Ambient Temperature 10–40 °C 10–40 °C 10–40 °C 10–40 °C
Ambient Humidity 10–90 % (non-condensing) 10–90 % (non-condensing) 10–90 % (non-condensing) 10–90 % (non-condensing)

Device Basic Data

Operation: Stand-alone device (includes firmware): 7.0 inch capacitive touchscreen, 800 x 480 pixels
Electronic Interface: 2x USB (2.0; type A); 1x RS-232; 1x LAN
Housing: Aluminum, powder-coated; protection class: IP20
Dimensions (W x H x D): 230 mm x 170 mm x 360 mm
Weight: 5 kg
Operating Voltage: 90–240 VAC
Power Consumption: 40 W in measuring mode; 60 W maximum
Rated Frequency: 50–60 Hz

¹ Under standard measurement conditions (λ = 589 nm, 20 °C, 1013 hPa, 50 % relative humidity)
² For non-condensing ambient conditions
³ After temperature equalization

DR6000-TF Series: Precision in High-Volume Automation

Incorporating a Peltier element alongside a flow-through cell, the DR6000-TF models enable fully automated operation when paired with a drying unit, peristaltic pump, and autosampler. These refractometers are tailored to meet the high

standards of manufacturers in the flavor, fragrance, and essential oil industries, as well as in the pharmaceutical and beverage sectors. They offer robust solutions for routine analysis with high sample throughput, ensuring quality and purity control of raw materials and finished products, or determining sugar concentration in juices and soft drinks.


Highlights

  • Flow-through Automation: The DR6000-TF models support automated workflows with integrated flow-through cells and drying units.
  • Industry-Specific Applications: Ideal for high-volume sample analysis in quality control for flavors, fragrances, pharmaceuticals, and beverages.
  • Enhanced Usability: Operable with additional peripherals like keyboards, barcode scanners, and adaptable user interfaces.

Technical Specifications

Measurement Data

DR6000-TF DR6100-TF DR6200-TF DR6300-TF
Scales Refractive index (nD)
Concentration of sucrose, glucose, fructose, and invert sugar (%Brix)
User-defined (unlimited)
Refractive index (nD)
Concentration of sucrose, glucose, fructose, and invert sugar (%Brix)
User-defined (unlimited)
Refractive index (nD)
Concentration of sucrose, glucose, fructose, and invert sugar (%Brix)
User-defined (unlimited)
Refractive index (nD)
Concentration of sucrose, glucose, fructose, and invert sugar (%Brix)
User-defined (unlimited)
Measurement Range nD 1.3200 – 1.5800
0–95 %Brix
nD 1.3200 – 1.7000
0–95 %Brix
nD 1.32000 – 1.58000
0–95 %Brix
nD 1.32000 – 1.70000
0–95 %Brix
Measurement Accuracy nD ±0.0001
±0.1 %Brix
nD ±0.0001
±0.1 %Brix
nD ±0.00002
±0.02 %Brix
nD ±0.00002
±0.02 %Brix
Resolution nD 0.0001
0.1 %Brix
nD 0.00001
0.01 %Brix
nD 0.0001
0.1 %Brix
nD 0.0001
0.1 %Brix
Measurement Period Approx. 4 seconds Approx. 4 seconds Approx. 4 seconds Approx. 4 seconds
Measurement Prism Sapphire  Sapphire  Sapphire  Sapphire
Light Source LED (589 nm) LED (589 nm) LED (589 nm) LED (589 nm)
Sample Volume/Filling Quantity ≈ 0.5 ml ≈ 0.5 ml ≈ 0.5 ml ≈ 0.5 ml
Components in Contact with Sample Sapphire, PTFE, stainless steel Sapphire, PTFE, stainless steel Sapphire, PTFE, stainless steel Sapphire, PTFE, stainless steel

Control & Device Data

Operation: Stand-alone device (includes firmware): 7.0-inch capacitive touchscreen, 800 x 480 pixels; control possible with PC keyboard, mouse, barcode scanner (multi-language support)
Data Integrity: Compliant with 21 CFR Part 11 and EU GMP Annex 11 requirements for data storage, including GMP/GLP, pharmacopoeia standards (USP, BP, JP, Ph. Eur.), FDA, ISO, HACCP, OIML, ASTM, ICUMSA, NIST
Electronic Interface: 1x USB, 1x RS-232, 1x Ethernet, LIMS integration available
Adjustment: Simple, menu-guided adjustment with certified calibration standards available

Temperature Data

Temperature Control: Integrated Peltier sample temperature control system
Temperature Measurement Range: 10–80 °C
Temperature Measurement Accuracy: ±0.1 °C
Temperature Compensation: Activatable ICUMSA or custom compensation
Temperature Sensor: Integrated Pt100
Temperature Measurement Resolution: 0.1 °C
Ambient Conditions: Non-condensing; 10–40 °C ambient temperature

Device Basic Data

Housing: Aluminum, powder-coated; protection class IP20
Dimensions (W x H x D): 215 mm x 150 mm x 345 mm
Weight: 5 kg
Operating Voltage: 90–240 V
Power Consumption: 40 W in measurement mode
Rated Frequency: 47–63 Hz

¹ Under normal measurement conditions (λ = 589 nm, 20 °C, 1013 hPa, 50 % relative humidity)
² For non-condensing ambient conditions
³ After temperature equalization

AR2008 Abbe Refractometer 

Advanced Digital Precision for Laboratory Use

The AR2008 Abbe Refractometer is a state-of-the-art optical instrument designed for the precise measurement of the refractive index (nD) and Brix values in liquid, viscous, and solid samples. The sample is placed between a measuring and illumination prism, ensuring accurate and reproducible readings. With an integrated LED display, users can conveniently view measurement data, including temperature.

Equipped with a serial interface (RS-232, RS-422), the AR2008 allows direct data transfer to a PC or printer, making documentation and analysis seamless. To enhance accuracy, the device supports optional temperature control via a PT31 circulation thermostat, ensuring stable measurement conditions. This refractometer is widely used across chemical, petrochemical, food, pharmaceutical, and research industries, making it a versatile and essential tool for laboratory professionals.


Key Features

  • Wide Sample Compatibility: Measures liquid, viscous, and solid samples with at least one smooth surface.
  • Extensive Measurement Range: Supports refractive index values from 1.3000 to 1.7200 and Brix values from 0-95%.
  • High Measurement Accuracy: Ensures precision with nD ±0.0002 and ±0.1% Brix.
  • Digital Data Display: Measurement values and temperature are clearly shown on the LED display.
  • Temperature Control Capability: Can be connected to a PT31 circulation thermostat for accurate thermal regulation.
  • Automatic Temperature Compensation (Optional): Enables compensation for Brix measurements according to ICUMSA standards.
  • User-Friendly Controls: Features an intuitive drive knob and selection keys for easy operation.
  • Robust & Durable Design: Housed in a sturdy, laboratory-grade casing for long-term reliability.
  • Seamless Data IntegrationRS-232 and RS-422 interfaces allow direct connection to PCs or printers for efficient data management.

Temperature Control for Accurate Measurements

For the most precise and reproducible readings, the AR2008 Abbe Refractometer can be connected to an external circulation thermostat (PT31). This ensures that ambient temperature fluctuations do not affect measurements, making the device suitable for high-precision laboratory applications.


Technical Specifications

Specification

Details

Measurement Range: nD 1.3000 – 1.72000 – 95 % Brix
Temperature Control Range: Retrofittable (Requires PT31 Circulation Thermostat)
Measurement Accuracy: nD ±0.0002, ±0.1 % Brix
Accuracy of Temperature Control: Retrofittable
Resolution: nD 0.0001, 0.1 % Brix
Wavelength: 589 nm
Temperature Measurement Accuracy: ±0.3 °C
Temperature Measurement Resolution: 0.1 °C
Scales: Refractive Index (nD), Sucrose Concentration (%Brix)
Adjustment: Via adjusting screw
Sample Contact Materials: Optical Flint Glass (SF4)
Additional Features: Optional Temperature Compensation for %Brix (ICUMSA)
Control: Drive knob, Selection Keys
Interfaces: 1 x RS-232, 1 x RS-422
Dimensions (W x H x D): 120 mm x 290 mm x 250 mm
Weight: 5 kg
Operating Voltage: 115/230 V, switchable
Power Consumption: 40 W
External Temperature Control: Requires PT31 Circulation Thermostat

Applications

  • Chemical & Petrochemical Industry: Analysis of raw materials, lubricants, and industrial solutions.
  • Food & Beverage Industry: Measurement of sugar content in juices, syrups, and food ingredients.
  • Pharmaceutical & Medical Research: Purity and concentration testing of formulations and solvents.
  • Oil & Grease Industry: Quality control and verification of oil-based substances.
  • Educational & Research Laboratories: High-precision refractive index measurements for academic and industrial R&D.

Why Choose the AR2008 Abbe Refractometer?

The AR2008 refractometer offers an advanced, digital approach to refractive index and Brix measurements with high precision, user-friendly operation, and seamless data integration. Its temperature control compatibilityautomatic Brix compensation option, and robust design make it an indispensable tool for laboratories requiring accurate and reproducible results.

Upgrade your laboratory with the AR2008 Abbe Refractometer and experience unparalleled precision in refractive index measurement!

AR4 Abbe Refractometer
Precision Measurement for Laboratory Applications

The AR4 Abbe Refractometer is a high-precision optical instrument designed for measuring the refractive index and Brix values of liquid and solid samples. This classic laboratory tool allows users to manually set scales using a drive knob and read values through an eyepiece. Equipped with an integrated digital thermometer, the AR4 displays temperature readings on an LCD screen. For enhanced accuracy, the refractometer can be connected to a PT31 circulation thermostat, ensuring temperature stability during measurements.

The AR4 is ideal for a wide range of applications, including identity verification, purity analysis, concentration determination, and sugar content measurement. It is widely used for quality control in raw materials, semi-finished products, and final goods, making it an essential instrument for food, beverage, pharmaceutical, and chemical industries.


Key Features

  • Versatile Sample Measurement: Compatible with liquid, viscous, and solid samples with at least one smooth surface.
  • Wide Measurement Range: Measures refractive index (nD) from 1.3000 to 1.7200 and Brix values from 0-95%.
  • High Accuracy and Precision: Provides measurement accuracy of nD ±0.0002 and ±0.1% Brix.
  • Eyepiece Reading: Read values conveniently through the integrated eyepiece.
  • Integrated Digital Thermometer: Temperature is measured and displayed on an LCD screen.
  • Temperature Control: Equipped with hose connections for external temperature regulation using the PT31 circulation thermostat.
  • User-Friendly Design: Features a robust housing, easy-to-operate drive knob, and an adjustable calibration screw for fine-tuned measurements.
  • Connectivity: Integrated RS-232 and RS-422 interfaces for seamless data transmission.
  • Compact and Durable: Lightweight design with sturdy construction for laboratory use.

Temperature Control with Circulation Thermostat

To ensure highly accurate and reproducible measurements, the AR4 refractometer can be connected to a circulation thermostat. This feature eliminates the influence of ambient temperature fluctuations, providing stable and precise readings.

The PT31 circulation thermostat is compact, easy to install, and ensures consistent temperature regulation for reliable laboratory measurements.


Technical Specifications

Specification

Details

Measurement Range: nD 1.3000 – 1.72000 – 95 % Brix
Temperature Control Range: Retrofittable (Requires PT31 Circulation Thermostat)
Measurement Accuracy: nD ±0.0002, ±0.1 % Brix
Accuracy of Temperature Control: Retrofittable
Resolution: nD 0.0005, 0.25 % Brix
Wavelength: 589 nm
Temperature Measurement Accuracy: ±0.5 °C
Temperature Measurement Resolution: 0.1 °C
Scales: Refractive Index (nD), Sucrose Concentration (%Brix)
Adjustment: Via adjusting screw
Sample Contact Materials: Optical Flint Glass (SF4)
Operation: Drive knob
Interfaces: 1 x RS-232, 1 x RS-422
Dimensions (W x H x D): 100 mm x 270 mm x 190 mm
Weight: 2.5 kg
Operating Voltage: 7.5 V
Power Consumption: 15 W
External Temperature Control: Requires PT31 Circulation Thermostat

Applications

  • Food & Beverage Industry: Quality control of sugar concentration in juices, syrups, and other food products.
  • Pharmaceutical Industry: Purity and concentration determination of raw materials and formulations.
  • Chemical Industry: Verification of liquid and viscous substances for quality assurance.
  • Research Laboratories: Used in academic and industrial R&D for precise refractive index measurements.

Why Choose the AR4 Abbe Refractometer?

The AR4 refractometer provides unmatched precision, durability, and ease of use for laboratory professionals. Its wide measurement rangetemperature control capability, and robust construction make it an indispensable tool for quality control and research applications.

Upgrade your laboratory’s analytical capabilities with the AR4 Abbe Refractometer today!

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