Einsatzgebiete und Branchen Polarimeter

Refractometer applications

In the pharmaceutical, chemical, food and beverage, flavor, fragrance and essential oils, petrochemical, metalworking and automotive industries, refractometers play an important role in quality assurance. They determine the refractive index of liquid or solid substances, from which their identity and quality as well as the concentration in binary or quasi-binary mixtures can be derived.
The progress of reactions and substance conversions are also readable via the refractive index. Refractometers are used in a variety of applications, from determining the purity and concentration of drug ingredients, to measuring sugar levels in food and beverages, to petroleum analysis.

Refractometers - fields of application and standards

Typical applicationsAnalysed substancesSpecial requirementsStandardsRecommended devices
PHARMACEUTICAL INDUSTRY
Characterisation tests in research and development. Identity test, purity control and concentration determination of raw materials, semi-finished products and end productsPharmaceuticals, infusion solutions, dialysis preparations, blood sera etc.Precision, compliance with standardsPharmacopoeia (USP, BP, JP, Ph. Eur.), GLP, FDA, NISTDR6100-T,
DR6300-T
CHEMICAL INDUSTRY
Characterisation tests in research and development.
Identity test, purity control and concentration determination of raw materials, semi-finished products and end products.
Tracking of chemical processes during production
Organic solvents, aliphatic or aromatic hydrocarbons, alcohols, salt solutions, acids, bases, stains, industrial oils, paints and varnishes, resins, glue components, tensides, extinguishing agents, polymer products, silicones, raw plastic materials etc.Exact temperature control within a wide temperature range, wide measurement range, variety of scales, variability of measurement methods, option of interval measurementsAOAC,
OIML,
ASTM,
DIN,
CID
DR6100-T,
DR6300-T,
DR201-95,
DR301-95,
PR SERIES,
PRB21S
PETROCHEMICAL, AUTOMOTIVE AND AVIATION INDUSTRY, METAL PROCESSING AND BUILDING TECHNOLOGY
Identity test and concentration determination.
Outgoing goods inspection
Stability test
Lubricating oils, fuels, gear oils, wax, lubricants, cooling lubricants, de-icing agents and anti-freeze agents, battery acid, AdBlue, tensides, cleaners, windshield wiper concentrate etc.Easy handling, availability of the Brix scale, temperature compensation optionAOAC,
OIML,
ASTM,
DIN,
CID
DR6000-T,
DR6200-T,
DR301-95,
HR SERIES,
PR SERIES,
PRB21S
FOOD INDUSTRY
Quality and purity control of raw materials and end products.
Determination of the sugar concentration.
Sugar, jams, honey, syrup, seasoning sauces, mustard and mayonnaise, convenience products, dairy products, baby food, egg products, oils, starch hydrolysis products etc.Fast measurement and easy handling, easy cleaning, availability of the Brix scale, routine analysis with high sample throughputAOAC,
OIML,

ASTM,
GLP,
ICUMSA
DR6000-T,
DR6200-T,
AR4,
AR2008,
HR SERIES,
PR SERIES,
PRB21S
SUGAR INDUSTRY
Determination of the sugar concentration in semi-finished products and end products.
Determination of the solids content in solutions.
Determination of the purity in combination with a polarimeter.
Sugar cane, beet pulp, molasses, refined sugar, syrup, invert sugar etc.Availability of the international sugar scale, availability of the Brix scale, maintenance-freeICUMSA,
GLP
DR6000,
DR6200-T,
PR SERIES,
PRB21
MANUFACTURERS OF AROMAS, FRAGRANCES AND ESSENTIAL OILS
Quality control of raw materials and auxiliary materials
M onitoring of the production of semi-finished products and end products
Essential oils (such as orange, lemon, lavender and peppermint oil), glyceric acid, Aromas and perfumes for the food, cosmetic and tobacco industry etc.Low sample volumes with a high aggressiveness, high accuracyPharmacopoeia (USP, BP, JP, Ph. Eur.),
AOAC,
OIML,
GLP
DR6100-T,
DR6300-T,
DR6100-TF,
DR6300-TF
BEVERAGE INDUSTRY
Routine analysis with high sample throughput.
Quality and purity control of raw materials and end products.
Determination of the sugar concentration in juices and alcohol-free beverages
Determination of the alcohol or extract content in beer, spices, wine or spirits.
Quality control of dairy products
Sewage water check.
Fruit and vegetable juices, dietary beverages, beer, spices, wine, spirits, distillates, liquors, sugar concentrates, dairy products, aromas and colouring etc.Fast measurement and easy handling, easy cleaning, availability of the Brix scaleAOAC,
OIML,
ICUMSA,
IAMFES,
GLP
DR6200-T,
DR6200-TF,
HR SERIES,
PR SERIES,
PRB21S
HOSPITALS AND PHARMACIES
Incoming and outgoing goods inspection.
Checking medicines for pharmacopeias.
Analysis of body secretions.
Medicines, infusion solutions, blood sera, dialysis preparations, urine etc.Easy handling, availability of the Brix scale, temperature compensation optionPharmacopoeia (USP, BP, JP, Ph. Eur.),
GLP
AR4,
DR301-95,
DR6100-T,
DR6300-T,
HR SERIES
TESTING LABORATORIES, INSTITUTES, TEACHING FACILITIES
Testing of foodstuff and pharmaceutical products.
Testing of the ompliance with national and international standards.
Training
Food and beverage samples, samples from research and development, acids, bases, solventsFood and beverage samples, samples from research and development, acids, bases, solventsPharmacopoeia (USP, BP, JP, Ph. Eur.),
AOAC,
OIML,
ASTM,
ISO,
DIN,
GLP
AR4,
AR2008,
DR6100-T,
DR6300-T,
HR SERIES

Handheld refractometers - fields of application

Handheld refractometerScaleMeasurement rangeMeasurement accuracyApplication
HRB10-TBrix0–10 %Brix±0.1 %BrixDetermination of sugar content in fruit, grapes, juices, vegetables, foods and cooling liquids
HRB18-TBrix0–18 %Brix±0.1 %BrixDetermination of sugar content in fruit, grapes, juices, vegetables, foods and cooling liquids
HRB32-TBrix0–32 %Brix±0.2 %BrixDetermination of sugar content in fruit, grapes, juices, vegetables, foods and cooling liquids
HRB62-TBrix28–62 %Brix±0.2 %BrixAnalysis of chemical and technical fluids, e.g. oils, greases, radiator fluids and lubricants
HRB82-TBrix45–82 % Brix±0.2 %BrixAnalysis of highly concentrated sugar solutions as well as chemical and technical liquids, e.g. oils, fats, radiator fluids and lubricants
HRB92-TBrix
Baumé
Water content in honey
58–92 %Brix
38–43 °Bé
12–27 % Water content in honey
±0.5 %Brix
±0.5 °Bé
±0.5 % Water content in honey
Examination of highly concentrated sugar solutions as well as analysis of fats, lubricants and food.
Examination of honey to the water content (according to guidelines of the German Beekeepers' Association).
Determination of the relative density with respect to the Baumé scale.
HRB90Brix (with thermometer 6–36 °C)0–90 %Brix±0.2 %BrixUniversal handheld refractometer for determining the sugar content of fruit, grapes, juices, vegetables, foods, oils, fats, coolants, lubricants and other sugary substances
HRH30-TWater content in honey12-30 % Water content in honey±0.1 % Water content in honeyExamination of honey to the water content (according to guidelines of the German Beekeepers' Association).
HRNDRefractive index1.3330–1.5170±0.0005Universal handheld refractometer for refractive indices.
Measuring range covers the most frequent substances of the pharmacy requirement.
HRS10-TSalinity (NaCI)
Specific gravity
0–10 %
1,000-1,070
±0.1%
±0.001
Salt content determination (NaCl) in liquids, such as in seawater, in drinks and preservatives of food.
Determination of the specific density of liquids at 20 ° C with respect to water.
HRS28-TSalinity (NaCI)0–28 %±0.2 %Salt content determination (NaCl) in liquids, such as in seawater, in drinks and preservatives of food.
HRM18-TRefractive index
Serum protein
Specific gravity of urine (UG)
1.3330–1.3600
0–12 g/dl
1.000–1.050 UG
±0.0005
±0.2 g/dl
±0.002 UG
Examination of urine samples for refractive index, protein content and specific gravity.
HRO32-TBrix
Oechsle
Potential alcohol content
0–32 %Brix
30–130 °Oe
4.4–19 % Alcohol
±0.2 %Brix
±1 °Oe
±0.1 % Alcolhol
Examination of grape must and alcoholic beverages.
HRKFZ-TEthylene and propylene glycol (antifreeze)
Battery acid
-50–0 °C
1.10–1.30 g/cm³
±5 °C
±0.01 g/cm³
Determination of acid concentration in batteries and measurement of glycol content in coolants.

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