Name Planned shipping method Start Date  
Tomato juice
Parameters (quantitative): total ergosterol [mg/l]
Article Number: 2010154
Category: chemical-physical testing food and feed non-alcoholic beverages
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Frozen shipping November 2026 Add to cart
Tomato ketchup
Parameters (quantitative): pH value [-], total acid (pH 8.1) calculated as acetic acid [g/100 g], citric acid (anhydrous) [g/100 g], sodium chloride [g/100 g], glucose (anhydrous) [g/100 g], fructose (anhydrous) [g/100 g], soluble solids [g/100 g], dry matter [g/100 g], sorbic acid [g/kg], benzoic acid [g/kg], sucrose (anhydrous) [g/100 g], total sugar (anhydrous) 1 [g/100 g]
Article Number: 2010390
Description: With the three PT-schemes mayonnaise, tomato ketchup and mustard we offer a high quality assurance program for the most popular sauces and basic ingredients for many further foodstuff throughout the world. The requested parameters are the most important value-determining attributes like the egg content in mayonnaise as well as technologically relevant parameters like preservatives.
Category: chemical-physical testing food and feed fruit & vegetables products
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Frozen shipping June 2025 Add to cart
Tomato ketchup
Article Number: 2010390
July 2026 Add to cart
Total count in milk 1
Parameters (quantitative): aerobic total count [cfu/g]
Article Number: 2010612
Description: Possible methods for participation, e.g.: ISO 4833, §35 LMBG 00.00-88
Category: immunological, molecular biological and microbiological testing food and feed milk and cream
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
risk group 1
Unfortunately, no further booking is possible this year.
Frozen shipping May 2025
Total count in milk 1
Article Number: 2010612
May 2026 Add to cart
Tropane alkaloids in flour
Parameters (quantitative): At least 3 different tropane alkaloids quantitatively, e.g. atropine, scopolamine, hyoscyamine
Article Number: 2010937
Category: chemical-physical testing food and feed cereals, cereal products
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Frozen shipping December 2025 Add to cart
Tropane alkaloids in flour
Article Number: 2010937
December 2026 Add to cart
Tuna (triangle test)
Parameters (qualitative): organoleptic testing - triangle test
Article Number: 3010004
Category: sensory testing food and feed food matrices (other)
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Shipping at room temperature June 2026 Add to cart
UHT milk (lactose free)
Parameters (quantitative): lactose (monohydrate) - enzymatic [g/100g], lactose (monohydrate) - chromatographic [g/100g]
Article Number: 2010107
Description: Lactose free products need to have a lactose content < 0.1% lactose. To verify that one can determine lactose contents < 0.1 % is the scope of this proficiency testing.
Category: chemical-physical testing food and feed milk and cream
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Frozen shipping May 2026 Add to cart
UHT milk 1
Parameters (quantitative): fat [g/100g], dry matter [g/100g], protein (N x 6,38) [g/100g], lactose (monohydrate) [g/100g], freezing point [m°C], density [g/ml]
Article Number: 2010007
Description: The anaylsis of the value assessing parameters in UHTmilk is requested in this proficiency testing round
Category: chemical-physical testing food and feed milk and cream
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Frozen shipping April 2026 Add to cart
UHT milk 2
Parameters (quantitative): fat [g/100g], dry matter [g/100g], protein (N x 6,38) [g/100g], lactose (monohydrate) [g/100g], freezing point [m°C], lactulose [mg/100g], aw value [-]
Article Number: 2010366
Description: The anaylsis of the value assessing parameters in UHTmilk is requested in this proficiency testing round
Category: chemical-physical testing food and feed milk and cream
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Frozen shipping August 2025 Add to cart
UHT milk 2
Article Number: 2010366
September 2026 Add to cart
Vegan food identification (ISO 23662)
Parameters (qualitative): identification of vegan foods
Article Number: 2011164
Category: immunological, molecular biological and microbiological testing food and feed vegan and vegetarian substitutes
Accreditation: This proficiency test is not included in the scope of the accreditation.
Refrigerated shipping October 2025 Add to cart
Vegan food identification (ISO 23662)
Parameters (qualitative): identification of vegan foods
Article Number: 2011164
October 2026 Add to cart
Vegetable chips
Parameters (quantitative): total fat [g/100 g], crude protein (N x 6,25) [g/100 g], dry matter [g/100 g], ash [g/100 g], sodium chloride [g/100 g], acrylamide (CAS 79-06-1) [µg/kg]
Article Number: 2011086
Category: chemical-physical testing food and feed fruit & vegetables products
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Refrigerated shipping May 2026 Add to cart
Vegetarian bread spread
Parameters (quantitative): total fat [g/100 g], crude protein (N x 6,25) [g/100 g], dry matter [g/100 g], sodium chloride [g/100 g], ash [g/100 g], pH value [-]
Article Number: 2010343
Description: For example, the samples in this PT are a plant-based bread spread.
Category: chemical-physical testing food and feed vegan and vegetarian substitutes
Accreditation: This proficiency test is not included in the scope of the accreditation.
Refrigerated shipping December 2025 Add to cart
Vegetarian bread spread
Article Number: 2010343
December 2026 Add to cart
Vegetarian sausage substitute
Parameters (quantitative): total fat [g/100 g], crude protein (N x 6,25) [g/100 g], dry matter [g/100 g], sodium chloride [g/100 g], ash [g/100 g], fibre [g/100 g], pH value 1 [-]
Article Number: 2010712
Description: The samples in this PT are a plant-based sausage substitute and a meat substitute.
Category: chemical-physical testing food and feed vegan and vegetarian substitutes
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Frozen shipping May 2026 Add to cart
Visual determination of insects in flour
Parameters (qualitative): qualitative detection of insects
Parameters (quantitative): quant. determination of insect residues [% (w/w)], number of whole insects [number/kg]
Article Number: 2011217
Description: This proficiency test may contain various insect species that are stock pests, e.g. Sitophilus granarius, Ephestia kuehniella, Tenebrio molitor.
Category: chemical-physical testing food and feed cereals, cereal products
Accreditation: This proficiency test is not included in the scope of the accreditation.
Refrigerated shipping September 2026 Add to cart
Vitamin solution
Parameters (quantitative): thiamine (vitamin B1) as thiamine chloride [mg/100 ml], riboflavine (vitamin B2) as total vitamin B2 [mg/100 ml], niacin (vitamin B3) [mg/100 ml], pantothenic acid (vitamin B5) [mg/100 ml], pyridoxine (vitamin B6) [mg/100 ml], folic acid (vitamin B11) [µg/100 ml], cyanocobalamin (vitamin B12) [µg/100 ml], L-ascorbic acid [mg/100 ml], α-tocopherol (vitamin E) [mg/100 ml], riboflavin [mg/100 ml], flavin mononucleotide [mg/100 ml]
Article Number: 2010021
Category: chemical-physical testing food and feed non-alcoholic beverages
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Frozen shipping May 2026 Add to cart
1 Parameter mit dieser Kennzeichnung sind abhangig von der Teilnehmerzahl und/oder der Materialauswahl.
Unter Umständen kann es vorkommen, dass dieser Parameter im Ringversuch nicht zur Verfügung steht.