Schmidt + Haensch GmbH & Co


Refractometers measure the extent of light refraction of transparent substances in either a liquid or solid state. Refractometric measurements can be used for example for purity investigations, sample recognition, dilution control or composition. It is also applied in the characterization of substances or for the determination of substance data, especially of organic liquids.
Important areas of application are the food-analysis (for example the investigation of oils or fat, sugar and sugar containing substances), beer and spirituous beverages, clinical chemistry and the investigation of liquids.

Schmidt + Haensch GmbH & Co
Visual hand-held refractometers are classic, visual refractometers used for the determination of the refractive index of liquid media of low or high viscosity. They are mainly used for quick on-the-spot-control of process streams and the field analysis in fruit and vegetable plantations.

Applications / Determination of:
• % Brix (4 different measuring ranges available)
• % Oechsle
• Urine (0 – 12 g/dl)
• Salinity tests (0 – 28 %)
• Wine measurements (0 – 32 %Bx; 0 – 140°Oe)

Different models of hand-held refractometers for special applications and with different resolution and precision are available. More information

Schmidt + Haensch GmbH & Co
Standard specifications:
Measuring range: 0 - 55% Brix / 1.33 - 1.54 RI
Resolution: 0.01% Brix / 0.0001 RI
Precision: +/- 0.2 Brix / +/- 0.0003 RI

The DHR-95 digital hand-held refractometer (Brixmeter) with 5-digit, full view LCD screen displays results in 2 seconds. The device is designed for the measurement of liquid media from low to high viscosity.

The DHR-95 offers a reliable automatic temperature compensation within +5 to 70 °C for 0 - 80 Brix and further convinces with a handy design and simple operation.

Various models are available, for applications including honey, wine, saline, glycol or DEF. For more information, please check the technical specifications or contact us. More information

Schmidt + Haensch GmbH & Co
Measuring range of the scale (refractive index):
1.3000 - 1.7200 RI or 0 - 95% Brix
Precision: +/- 0.0002 RI / 0.1 % Brix

The visual ABBE-refractometer AR12 is designed for the determination of concentration and purity control of liquid media with high or low viscosity and solids. This refractometer is equipped with hose connections at the prism unit for the thermostatisation of the optical parts. The temperature is measured with a digital thermometer. The measuring principle is based on the law of Snellius (law of refractive index) and is able to measure with transmitted or totally reflected light. With a contact fluid, even solids can be measured. Optionally, an illumination unit is available for prism and scale illumination with a LED. The visual ABBE-refractometer AR12 is mostly used in the fast control of liquids and the “in-field analysis“. More information

Schmidt + Haensch GmbH & Co
Highest measuring accuracy
Wide range of different models for versatile applications (incl. fully automatic spectral refractometers)

High-performance refractometers for the determination of mixing ratios and quality-quantity control of solutions. Suitable also for solids and aggressive solutions. Single-sample or flow-through measurement modes are available.

Typical applications are the determination of refractive index, dry substance, mass percent as well as Brix measurements and standard scales (Brix, Oechsle, Zeiss, Fat, Honey).
Conformity: International Pharmacopoea, ASTM, AOAC, DIN, FDA, ICUMSA and others.

There are various models available, depending on the measuring range, accuracy, resolution and application: VariRef (A, B, C), ATR-BR (basic refractometer) and ATR-L (multi-wavelength refractometer). More information

Schmidt + Haensch GmbH & Co
Inline Process Refractometers (iPR), measuring the refractive index continuously and in real time, are used in a wide range of process monitoring applications. They are available as stand-alone solutions with integrated display or connected to a PLC. The iPR measuring heads can be combined with various process sensors such as O2, CO2, pH, turbidity or conductivity to an intelligent sensing station, complying with regulations in food, beverage and pharmaceutical industries. To avoid the contact of highly concentrated acids or corrosive substances with stainless steel surface, special PTFE inline housings are available.

Available models: iPR B³, iPR Compact² (aluminium and stainless steel), iPR FR², iPR HR², and iPR EX (the EX-protection version of the iPR-B³).

Applications: Concentration monitoring, product interface detection, deviation from the nominal value detection (Quality Control), crystallization monitoring, dosage control. More information

Schmidt + Haensch GmbH & Co
Certified Reference Materials (CRM) (also refractive index standard) from Schmidt+Haensch are available with high precisions over the whole temperature and wavelength range. The reference liquids are traceable to PTB standards and enable a high-quality verification, calibrating or testing of your refractometer. More information