Automatic Lab Refractometers
ATR-ST Series 0-100 Brix

Features of ATR-ST 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 programmable

Introduction to The ATR-ST
This Compact laboratory refractometer is suitable for aggressive solutions and measurement of solids. The new ATR-ST is a critical angle refractometer for the measuring of liquid media from low to high viscosity, and independent of opacity and color. These instruments are available in a variety of configurations for laboratory and production quality control.

Equipped with a detachable funnel, this unite replaces the ATR E and C and offers an additional range of possibilities. 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.

The ATR-ST series has 4 special scales, including the Brix scale programed by the factory, allowing for various applications in production and laboratory. The software of the ATR-ST 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.

In the refractometer ATR ST series are three different models, they have other parameter for the measuring range, resolution and the precision. Please see table "Technical details".

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.

The Schmidt 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-ST 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. The ATR-ST, equipped with a detachable funnel, replaces the ATR E and -C and offers an additional range of possibilities. 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 forms may be created and printed out. 4 special scales, one of them being programmed as Bx scale and one of them as a grease scale according to Leithe by the factory, allow various applications in production and laboratory. The software of the ATR-ST, designed close to the practice makes it possible to take the mean value and to determine standard derivation and adjustable measuring delay for special measurements in dependence of the temperature. All functions may also be controlled via PC using the remote control program.

Example application scenario: A soft drink company wants to measure the Brix concentration in syrups or its final product. A Refractometer with a precision of ± 0.05 Brix is needed. The budget is limited.


 
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

ATR ST
Measuring range: 1.3320-1.5320nD / 0-95Brix
Resolution: 0.0001nD / 0.05Brix
Precision: ±0.0001nD / ±0.05Brix
Resoluiton temperature display: 0.01°C
Thermostatisation: no
Working temperature: +5 to +50°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 and parallel interfaces, USB adapter optional
Display: LCD, 16x16 characters, illuminated
Controls: 20 key membrane including funktion keys
Weight: 4kg
ATR ST plus Differences
Measuring range: 1.30000-1.54000nD / 0-100Brix
Resolution: 0.00002nD / 0.02Brix
Precision: ±0.00005nD / ±0.03Brix
ATR ST S plus Differences
Measuring range: 1.28000-1.54000nD / 0-100Brix
Resolution: 0.00001nD / 0.01Brix
Precision: ±0.00003nD / ±0.02Brix
Ordering Information
Model Description Part No Price USD
ATR ST Resolution: 0,0001 nD , 0,05% Bx T04320 $8250.00
ATR ST Plus Higher Resolution = larger measuring range : 0.00002nD / 0.02Brix T04320 $8970.00
ATR ST S Plus 0.00001 nD, 0.01% Bx T04320 $10575.00

Sugar Instrumentation


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