Features of ATR-BR Automatic Refractometers
  • Measurement of liquids from low to high viscosity
  • Irrespective of opacity and colour
  • 0.3 ml sample volume is suffi cient
  • PTFE sample room for aggressive samples
  • Date and time function
  • 10 user-defined scales

Compact laboratory refractometer. The new ATR-BR is an critical angle refractometer for the measuring of liquid media from low to high viscosity, and independent of opacity and color. The ATR instrument are available in a variety of configurations for laboratory and production quality control. The newly designed casing offers more space for a bigger LCD display and a splash proofed foil keyboard. Batch numbers can be entered directly and also simple form may be created and printed out.

4 special scales, one of them being programmed as Brix scale by the factory, allow various applications in production and laboratory. The software of the ATR-BR, designed close to the practice makes it possible to take the mean value and to determine standard derivation and adjustable measuring delay for special measurement in dependence of the temperature. All functions may also be controlled via PC using the remote control program.

Refractometry and Concentration
Refractometers are widely used to measure the amount of dissolved substances in solutions containing mainly sucrose. The relationship between refractive index and the amount of dry substance content is well known for sucrose and is the basis of the Brix scale which is measure of the number of grams of sucrose present per 100 grams of aqueous sugar solution. (50 Brix means 50 grams of solid per 100 gm of solution) This relationship holds for a large number of similar substances and so the Brix scale is widely used in the food industry. Unfortunately the refractive index of a sugar solution changes with temperature while its solid content remains the same. ( The same refractive index at different temperatures correspond to different Brix values.) Manual "Abbe" Refractometers do not compensate for this temperature effect and manual correction tables should be used to adjust the readings to a standard temperature.

TheSchmidt and Haensch range of automatic Refractometers supplied by Topac measure both the refractive index and the temperature of the sample in order to evaluate the Brix value. They read out both the actual refractive index and the actual sample temperature, but they automatically correct the Brix value to what it would be at 20 degs C. regardless of the actual sample temperature. ( In the range 10 - 40 C)
The instruments come in a variety of configurations to meet the needs of laboratory , QC, research and production applications.

The new ATR-BR is an automatic critical-angle refractometer for the measurement of liquid media indepent of their viscosity, colour and transparency to be used in the quality control of productions and laboratories.

Applications of Refractometers include:

Chemicals Solvents, organic polymers, distilled products, solutions of inorganic compounds, pesticides, washing agents
Agriculture Ripeness of fruits, vegetables, beet and sugar cane.
Food Industry Yogurt, jam, fruit extract, syrup, honey coffee extract, vegetable albumen, chocolate, milk, baby food.
Beverage Industry Soft drinks, fruit juice, wine, beer,
Medical Serum, blood, urine
Pharmaceutical Essences, essential oils, aromas.
Petrochemicals Oils, fats, waxes, naphthalenes, raw oils, varnishes, paints

Specifications for ATR automatic Refractometers

Measuring range: 1.32000-1.54000 nD / 0-100Brix
esolution: 0.00001nD / 0.01Brix
Precision: ± 0,00002 RI / ± 0,01 %Brix (measurement range 1,32 – 1,44) and
± 0,00003 RI / ± 0,01 %Brix (measurement range 1,44 – 1,54)
Reproducibility 0,00001 RI / 0,01 %Brix
Resoluiton temperature display: 0.01°C
Thermostatisation: no
Working temperature: +10 to +40°C
Temperature compensation Brix: in range of +5 to +50°C
Light source: 589nm LED
Programmable scales: 10
Real time clock: Battery operated, 10 years lifetime
Data output: serial to ethernet converter
Display: LCD, 16x16 characters, illuminated
Controls: 20 key membrane including function keys
Weight: 4kg

Ordering Information

Model Description Part No Price USD
ATR BR Resolution: 0,00001 nD , 0,01% Brix T04320 call for quote
Sugar Instrumentation