
Measurement according to normative specifications
In analytics, the comparability of measurement results is of central importance. Modern analytical processes are therefore based on specifications and rules laid down in national and international standards.
Standards in measurement technology describe terms, measurement methods and measuring units. Standards also regulate networking functions by standardizing interfaces, communication and secure data transmission. They enable a quality agreement for standards and tolerances. Although not legally binding, normative trade is associated with great legal certainty for the user. It facilitates the selection of devices and thus secures the own processes and product quality.
Refractometers are also designed and used in accordance with standards. Standards in refractometry regulate, under the aspect of “best practice”, the environmental conditions and sample preparation as well as measurement tolerances, properties and equipment features of a device or certificates of calibration equipment and testing instruments. Whoever uses refractometers according to normative specifications can guarantee that measurements are correct and work according to reproducible procedures.
In order to make it easier for you to choose the right refractometer for your application, you will find below an overview of all standards and guidelines that refer to refractometers. This is a general overview of the standards. Which normative specifications the different refractometer models from A.KRÜSS fulfil your requirements, we will be happy to discuss in a personal consultation. Please feel free to contact us.
Refractometer - overview of standards
ORGANISATION | TITLE |
---|---|
AOAC 898.02-1898 | Physical Constants of 10 per cent distillate of lemon and orange oils |
AOAC 905.01-1905 | Methanol in Distilled Liquors - Immersion refractometer method |
AOAC 908.01-1908 / Appendix C | Percent Alcohol by Volume in Distilled Liquors |
AOAC 920.141-1920 | Refractive index of lemon and orange oils |
AOAC 920.58-1920 | Alcohol in wines - By volume from refraction (rapid method) |
AOAC 920.78-1920 | Index of refraction of cacao fat |
AOAC 921.08-1921 | Index of refraction of oils and fats |
AOAC 932.12-1980 | Solids (soluble) in fruits and fruit products |
AOAC 932.14-2000 | Solids in syrups |
AOAC 940.06-1940 | Methanol in Cordials and Liqueurs |
AOAC 940.09-1964 | Total Solids in Cordials and Liqueurs |
AOAC 940.16-1940 | Volatile esters in cordials and liqueurs |
AOAC 943.05-1997 | Dry substance in corn syrups and sugars |
AOAC 945.102-1945 | Oil (mineral) in fats |
AOAC 948.10-1948 | Water (added) in milk |
AOAC 950.04-1950 | Alcohol by volume in distilled liqueurs |
AOAC 950.06-1997 | Fermentation of beer |
AOAC 950.13-1950 | Alcohol in nonalcoholic beverages |
AOAC 953.16-1953 | Fruit Content (Approximate) of Frozen Fruit-Sugar Mixtures |
AOAC 960.57-1970 | Crystalline substances |
AOAC 969.18-1969 | Refractive Index of Butterfat |
AOAC 969.38-1969 | Moisture in honey |
AOAC 970.15-1971 | Alcohol (by weight) in beer - Refractometer method |
AOAC 970.59-2002 | Solids (soluble) in tomato products |
AOAC 973.65-1974 | Characterization and matching of glass fragments |
AOAC 976.20-1976 | Solids (Soluble) in Frozen Concentrate for Lemonade |
AOAC 981.23-1992 | Mineral wool insulation |
AOAC 983.01-1984 | Urea and methyleneureas (Water-soluble) in fertilizers |
AOAC 983.17-2001 | Solids (Soluble) in Citrus Fruit Juices |
AOAC 995.17-1998 | Beet sugars in fruit juices |
AOAC 2000.19-2000 | Beet or cane sugar in maple syrup |
AOCS S 2-64-2017 | Methods for Testing Drying Oils |
AOCS Tp 1a-64-2017 | Refractive Index of Drying Oils |
AOCS Methods Set 2000 | AOCS Methods Set |
ASTM D542-14:2014 | Standard Test Method for Index of Refraction of Transparent Organic Plastics |
ASTM D5775-95:2014 | Standard Test Method for Rubber—Determination of Bound Styrene in Styrene Butadiene Rubber by Refractive Index |
ASTM D1218-12:2016 | Standard Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids |
ASTM D1747-09:2014 | Standard Test Method for Refractive Index of Viscous Materials |
ASTM D3321-19:2019 | Standard Test Method for Use of the Refractometer for Field Test Determination of the Freezing Point of Aqueous Engine Coolants |
ASTM D4095-97:2014 | Standard Practice for Use of the Refractometer for Determining Nonvolatile Matter (Total Solids) in Floor Polishes |
ASTM D4542-15:2015 | Standard Test Methods for Pore Water Extraction and Determination of the Soluble Salt Content of Soils by Refractometer |
ASTM D5006-11:2016 | Standard Test Method for Measurement of Fuel System Icing Inhibitors (Ether Type) in Aviation Fuels |
DIN 51423-2:2010-02 | Testing of mineral oils - Part 2: Measurement of the relative refractive index with the Abbe-refractometer Prüfung von Mineralölen - Teil 2: Messung der relativen Brechzahl mit dem Abbe-Refraktometer |
EHC Harmonised methods of the European Honey Commission 1997 | Determination of moisture, refractometric method |
ICUMSA GS4/3/8-13:2009 | The Determination of Refractometric Dry Substance (RDS %) of Molasses - Accepted and Very Pure Syrups (Liquid Sugars), Thick Juice and Run-off Syrups-Official |
ICUMSA SPS-3:2000 | Refractometry and Tables - Official |
ISO 1743:1982 (2013) | Glucose Syrup – Determination of dry matter content – Refractive index method |
OIML R 108:1993 | Refractometers for the measurement of the sugar content of fruit juices |
OIV MA-AS2-02:R2012 | Evaluation by refractometry of the sugar concentration in grape musts, concentrated grape musts and rectified concentrated grape musts |
OIV MA-AS312-01B:R2009 | Alcoholic strength by volume - Measurement of the alcoholic strength of the distillate by refractometry |
Ph. Eur. 7th Edition-2.2.7:2008 | Refractive Index |
USP 831-2013 | Refractive Index |
Information about standards and directives for free download:
Additional information about institutes, standards and directives:
- AOAC – Association of Official Analytical Collaboration International
Get latest NEWS - AOCS – American Oil Chemists‘ Society
More Information - ASTM – American Society for Testing and Materials
Get latest NEWS - DIN – German Institute for Standardization
Get latest NEWS - EHC – European Honey Commission and International Honey Commission
More Information - ISO – International Organization for Standardization
Get latest NEWS - ICUMSA – The International Commission for Uniform Methods of Sugar Analysis
Get latest NEWS - OIML – International Organization of Legal Metrology
More Information - OIV – International Organisation of Vine and Wine
More Information - Ph. Eur. – European Pharmacopoeia
More Informations - USP – United States Pharmacopeia
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