Refractometer (Brix / Sugar measurement) and Other Laboratory Instruments
This digital handheld refractometer DHR by SCHMIDT + HAENSCH allows for rapid, on-site measurements of liquid substances with high or low viscosity.
The full view of the LCD screen of the DHR displays reliable results with high precision (five digits) in 2 seconds. SCHMIDT + HAENSCH’s DHR can be used in agriculture, e.g. to determine the point of harvest, or in the automotive industry, e.g. to analyze antifreeze.
The SCHMIDT + HAENSCH ATR BR is a stand-alone, critical angle refractometer for measuring liquid media from low to high viscosity, independent of opacity and color. It is adaptable to different applications in production and laboratory thanks to a broad variety of configurations while having an excellent price-performance ratio.
Multiple wavelength digital refractometer for dispersion measurements.
The digital, fully automatic spectral refractometer ATR-L consists of an electronic unit separated from the stainless steel measuring unit. Dispersion measurement at 7 wavelengths over the full visible range. A sample volume of 0,3 ml is sufficient for measuring. The refractometer is equipped with a Peltier thermostat (no external water bath/thermostat necessary).
The digital multiple wavelength refractometer of SCHMIDT + HAENSCH is based on CCD-sensor detection of the critical angle of total reflection. This is done sequentially for all LEDs (colours) and displayed as refractive indices according to these wavelengths. SCHMIDT + HAENSCH has the necessary data basis for calibration of such an instrument through research work performed at its premises in Berlin.
| Measuring scales | Refractive Index (RI) Sucrose (%Brix) |
| 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 |
| Measurement mode | Single sample |
| Ambient temperature | 15 °C – 40 °C |
| Temperature measurement | NTC sensor for measurement of sample temperature placed inside the prism |
| Temperature control sample | By build-in solid state Petier-thermostat |
| Temperature control range | 10 °C – 80 °C |
| Temperature resolution | 0.01 °C |
| Temperature precision | ± 0.03 °C |
| Temperature reproducibility | ± 0.02 °C |
| Temperature compensation Brix | 10 °C – 80 °C |
The robust ATR P critical angle refractometer is especially designed for applications in the sugar industry and for the determination of mixing ratios or mass fraction. The system consists of the robust and waterproof ATR P measuring head made from stainless steel and the VariControl unit with a high resolution 7″ TFT Touchscreen.
Like all SCHMIDT + HAENSCH instruments, this refractometer is easy in handling while providing highly accurate and reproducible measuring results. Depending on its application, ATR P allows for both single and flow-through measurement. The measuring head can be placed both vertically and horizontally with respect to the sample chamber. As the measuring head can either be used in a horizontal or vertical position, liquid samples containing solid matter can be measured, making the ATR P well-suited for quality control of liquids such as fruit juice.
Calibration can be performed easily using a sucrose solution. The ATR P measuring head can be easily connected to a PC or laptop. As always, the proven SCHMIDT + HAENSCH quality includes documentation according to GLP/GMP. Furthermore, the integrated Aquisys 2 software guarantees 21 CFR Part 11 compliance.
The high-performance robust ATR P critical angle refractometer is designed for applications in the sugar industry, especially for the determination of mixing ratios (mass percent). The complete system consists of the robust and waterproof ATR P measuring head made from stainless steel and VariControl unit with a high resolution 7″ TFT Touchscreen. Due to the user friendliness and the easy handling highly accurate and reproducible measuring results can be rapidly generated. Various sample chamber covers allow single or flow-through measurement. As the measuring head can either be used in a horizontal or vertical position relative to sample, sedimenting samples can also be measured with high precision making the ATR P applicable to quality control of liquids like fruit juice. Easy calibration can be performed with a sucrose solution. As an alternative to the VariControl unit, the ATR P measuring head can be connected to a PC or laptop. As always, the proven SCHMIDT + HAENSCH quality includes documentation according to GLP/GMP. Furthermore, the integrated Aquisys 2 software guarantees 21 CFR Part 11 conformity.
The VariRef has the well-established double isolated inbuilt peltier systems (no external water bath/thermostat necessary) which allows fastest temperature control and reduces the influence of environment temperature, resulting in fast and precise measurements. Its flat shape is ideal for easy cleaning. When dealing with hard to clean or hazardous materials we offer you a special covered version to ensure a long and proper product life. The LED light source and the self-checking capabilities for cleanliness, environment temperature effects, calibration and more result in a virtually maintenance free product life.
To ensure highest precision over the long product life, the VariRef enables you to make a multi-point calibration for the complete measurement range. Thus giving you the tools for a fast and economic maintenance at your side. With the VariRef you have access to the complete scale library of Schmidt + Haensch offering readymade solutions for numerous applications.
| Standard models | VariRef A VariRef B VariRef C |
| Measuring scale | Refractive Index (RI), Sucrose (%Brix), Standard scales included, freely definable scales, USG |
| Measuring range | 1.32000 – 1.58000 RI / 100% Brix (VariRef C) 1.32000 – 1.70000 RI / 100% Brix (VariRef B1) 1.29000 – 1.58000 RI / 100% Brix (VariRef B2) 1.32000 – 1.58000 RI / 100% Brix (VariRef A) |
| Resolution | 0.0001 RI / 0.05% Brix (VariRef C) 0.00001 RI / 0.01% Brix (VariRef B) 0.000001 RI / 0.001% Brix (VariRef A) |
| Precision | ± 0,0001 RI* / ± 0.05% Brix* (VariRef C) ± 0,00002 RI* / ± 0.02% Brix* (VariRef B) ± 0,00002 RI* / ± 0.02% Brix* (VariRef B) |
| Repeatability | ± 0.0001 RI / ± 0.05% Brix (VariRef B) ± 0.00002 RI / ± 0.02% Brix (VariRef B) ± 0.000005 RI / ± 0.006% Brix (VariRef A) |
| Ambient temperature | + 10° C to + 40°C |
| Temperature measurement | Pt 1000 sensor |
| Temperature range | + 5°C to + 80°C (VariRef C) + 5°C to + 100°C (VariRef B) + 20°C others upon request (VariRef A) |
| Resolution | 0.01°C |
| Precision | ± 0.03°C* |