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EPTIS factsheet 153545 | Last revision 2022-10-27 | URL: https://www.eptis.bam.de/pts153545 https://www.eptis.bam.de/pts153545

PT provider
PT provider DRRR - Deutsches Referenzbüro für Ringversuche und Referenzmaterialien GmbH DRRR - Deutsches Referenzbüro für Ringversuche und Referenzmaterialien GmbH
Based in Germany
Language(s) German/English
Remarks The microorganism E.coli is part of the intestinal microflora of humans and warm-blooded animals. Furthermore E.coli is used as an indicator organism for faecal pollution and hygienic parameter in a lot of different foodstuff like milk products, meat products or fruit juice. Therefore we developed and established the present proficiency testing scheme. In the field of cooperation we developed and established PT schemes in the matrix fruit juice concentrate and beverage compounds for the fruit juice industry. Potential microbiological spoiling agents belong to different germs like yeasts, moulds, lactobacilli or acetic acid bacteria that should be alternating analysed in the present PT schemes. This proficiency testing is an excellent tool for your extern assurance for sensory analysis of foods. In addition it serves as recognizied proof of the compentence of your testing panel in the external appearance. The sensory triangle test is one of the most important sensory difference tests and an established quality assurance measure. The comparability of the organoleptic testing is the necessary prerequisite. With our proficiency testing schemes you can ensure the comparability of your organoleptic testing and demonstrate this in external representation.
Product groups Food and drink
Testing fields Analytical chemistry
Sensory testing
Technical details
Test item Tested property Testing method
Orange juice frozen Total carotenoid + fraction I: carotene + fraction II: cryptoxanthineEster + fraktion III: xanthophyll ester -
limonin -
Energydrink pH value -
Sucrose -
Caffeine -
Taurine -
Inosit -
Gluconolacton -
Vitamin solution L-ascorbic acid (vitamin C) -
Thiamine (vitamin B1) -
Riboflavine (vitamin B2) -
Pyridoxine (vitamin B6) -
Cobalamin (vitamin B12) -
Alpha-tocopherol (vitamin E) -
Folic acid (vitamin B11) -
Pantothenic acid (vitamin B5) -
Niacin (vitamin B3) -
Carrot juice frozen Nitrate -
Sucrose -
Glucose -
Fructose -
Titratable acid -
Relative density 20 °C / 20 °C -
pH-value -
Beta-carotene -
Tea Ash -
Dry matter -
Caffeine -
Water soluble ash -
Water soluble exract -
Theobromine -
Theophylline -
Pyrrolizidine alkaloids -
Lycopsamine -
Echimidine -
Retrorsine -
Senecionine -
Seneciphylline -
Senkirkine -
Heliotrine -
Monocrotaline -
Lasiocarpine -
Fruit juice frozen E.coli -
Coffee pH value -
Ash -
Water -
Acidity -
Water soluble extract -
Caffeine -
Acrylamide -
Chlorogenic acid -
E.coli -
Coliforme bacteria -
Coffee infusion (triangle test) -
Simple descriptive testing) -
Profile testing -
Loss in mass at 105 °C ISO 6673
Fruit juice concentrate frozen Brix value -
ph value -
Titratable acidity -
Citric acid -
D-isocitric-acid -
L-malic acid -
Ascorbic acid -
Lactic acid -
Citric acid - Isocitric acid ration -
Hesperidin -
Glucose -
Fructose -
Sucrose -
Total sugar -
Sugar free extract -
Glucose-Fructose ration -
% sucrose of sugar -
Ash -
Potassium -
Calcium -
Magnesium -
Total Phosphorus -
Sodium -
Nitrate -
Copper -
Iron -
Spoiling agents -
Alicyclobacillus -
Yeasts -
Moulds -
Lactobacillus -
Acetic acid bacteria -
Water Ranking test (basic tastes) -
Triangle test (basic taste) -
threshold test -
Fruit juice Sensory impression Triangle test
Flavour taint
Threshold value examinato of flavour taint
simple descriptive testing
Drinking water TON -
Tea frozen Salmonella spp. -
Soy milk, almond milk Fat -
Dry Matter -
Protein -
Freezing Point -
Density -
Texture test Triangle test -
Colour Check Triangle test -
Apple Juice Triangle test -
Patulin -
Lupins Drink Quinolizidine alkaloids -
Lupanine -
Lupinin -
Spartein -
Sugar substitutes in food Isomalt -
Lactite -
Maltitol -
Xylitol -
Sorbitol -
Mannitol -
Aims of the PT scheme
Target group of participants all laboratories
Linked to specific legislation / standards
Additional, subsidiary aims validation of testing methods
Number of participants depending on test methods between 8 - 50 laboratoties
Accredited or otherwise reviewed by a 3rd party

Accredited by A2LA (USA) and DAkkS (Germany) on the basis of ISO/IEC 17043 for part of the parameters

Operation is commissioned / requested by
Fees and frequency
Participation fee 203-554 Euro, depending on sample and parameters
Regularly operated Yes (several times p.a., dep. on sample and parameters)
Year of first operation 2007-2014, 2020, 2021, 2022,2023
Contact details of the PT provider
Provider Contact person
DRRR - Deutsches Referenzbüro für Ringversuche und Referenzmaterialien GmbH
Reinhartser Straße 31
87437 Kempten

Phone: +49 (0) 831/960 8780
Fax: +49 (0) 831/960 87899
Web: http://www.drrr.de http://www.drrr.de
Dr. Ulrich Leist
Phone: +49 (0) 831/960 87878
Fax: +49 (0) 831/960 87899
Email: info@drrr.de info@drrr.de
If you find any mistakes please contact the responsible EPTIS coordinator in Germany, Mr Johannes van de Kreeke. Mr Johannes van de Kreeke.
Any questions or problems? Please contact us at eptis@bam.de.
Application version: 1.23-SNAPSHOT.20230502124635-7925ae379a631fc1ececff45d2921c8db38877d5