Name Planned shipping method Start Date  
Coating thickness - Magnetic method ISO 2178
Parameters (quantitative): Layer thickness [µm]
Article Number: 2010615
Category: physical mechanical testing material testing metals
Accreditation: This proficiency test is not included in the scope of the accreditation.
Shipping at room temperature May 2026 Add to cart
Coating thickness - X-ray spectrometric method ISO 3497
Parameters (quantitative): Layer thickness Nickel [µm], Layer thickness Chrome [µm], Layer thickness Tin [µm], Layer thickness Silver [µm], Layer thickness Gold [µm], Layer thickness Zinc [µm]
Article Number: 2010371
Category: chemical-physical testing material testing metals
Accreditation: This proficiency test is not included in the scope of the accreditation.
Is currently underway. Can still be booked.
Shipping at room temperature March 2025 Add to cart
Coating thickness - X-ray spectrometric method ISO 3497
Article Number: 2010371
March 2026 Add to cart
Coating thickness (Cu-Ni-Cr) ISO 1456 (ISO 1463, ISO 2177)
Parameters (quantitative): Layer thickness Cu [µm], Layer thickness Ni (total) [µm], Layer thickness Cr [µm]
Article Number: 2010239
Category: physical mechanical testing material testing plastics (Electroplating)
Accreditation: This proficiency test is within the scope of the A2LA accreditation.
Shipping at room temperature May 2025 Add to cart
Coating thickness (Cu-Ni-Cr) ISO 1456 (ISO 1463, ISO 2177)
Article Number: 2010239
May 2026 Add to cart
Coating thickness Amplitude-sensitive eddy-current method ISO 2360
Parameters (quantitative): Layer thickness [µm]
Article Number: 2010295
Category: physical mechanical testing material testing metals
Accreditation: This proficiency test is not included in the scope of the accreditation.
Shipping at room temperature May 2025 Add to cart
Coating thickness Amplitude-sensitive eddy-current method ISO 2360
Article Number: 2010295
May 2026 Add to cart
Coating thicknesses, potential difference (nickel layers) ISO 16866, ASTM B764
Parameters (quantitative): Thickness mp-Ni [µm], Thickness bright-Ni [µm], Thickness semi-bright-Ni [µm], Potential difference (mp-Ni to bright-Ni) [mV], Potential difference (semi-bright-Ni to bright-Ni) [mV]
Article Number: 2010241
Category: physical mechanical testing material testing plastics (Electroplating)
Accreditation: This proficiency test is within the scope of the A2LA accreditation.
Shipping at room temperature May 2025 Add to cart
Coating thicknesses, potential difference (nickel layers) ISO 16866, ASTM B764
Article Number: 2010241
May 2026 Add to cart
Coefficient of linear thermal expansion (CTLE) ISO 11359
Parameters (quantitative): Mean CLTE (25-100°C) [10-6 1/k], Mean CLTE (25-80°C) [10-6 1/k], Differential CLTE (100°C) [10-6 1/k], Differential CLTE (80°C) [10-6 1/k]
Article Number: 2010758
Category: chemical-physical testing material testing plastics (thermoplastics)
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Shipping at room temperature April 2025 Add to cart
Coefficient of linear thermal expansion (CTLE) ISO 11359
Article Number: 2010758
April 2026 Add to cart
Coefficients of friction ISO 8295
Parameters (quantitative): Static friction [-], Kinetic friction [-]
Article Number: 2010780
Category: physical mechanical testing material testing films
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Is currently underway. Can still be booked.
Shipping at room temperature March 2025 Add to cart
Coefficients of friction ISO 8295
Article Number: 2010780
March 2026 Add to cart
Coffee
Parameters (quantitative): water content [g/100 g], ash [g/100 g], pH value [-], acid content (acidity) at pH 6,00 [mmol/kg], acid content (acidity) at pH 7,00 [mmol/kg], acid content (acidity) at pH 8,00 [mmol/kg], water soluble extract [g/100 g], caffeine [g/100 g], acrylamide (CAS 79-06-1) [µg/kg], chlorogenic acid 1 [g/100 g]
Article Number: 2010392
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 October 2025 Add to cart
Coffee
Article Number: 2010392
October 2026 Add to cart
Coffee infusion (triangle test, flavour taint)
Parameters (qualitative): organoleptic testing - triangle test flavour
Article Number: 3010016
Category: sensory testing food and feed non-alcoholic beverages
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
Refrigerated shipping July 2025 Add to cart
Coffee infusion (triangle test, flavour taint)
Parameters (qualitative): organoleptic testing - triangle test flavour
Article Number: 3010016
July 2026 Add to cart
Coliform bacteria milk powder
Parameters (quantitative): Coliforms [cfu/g], aerobic total count [cfu/g]
Article Number: 2010160
Description: Possible methods for participation, e.g.: ISO 4832, ISO 4833, §64 LFGB L00.00-88
Category: immunological, molecular biological and microbiological testing food and feed milk powder
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
risk group 1
Frozen shipping May 2025 Add to cart
Coliform bacteria milk powder
Article Number: 2010160
May 2026 Add to cart
Coliforme bacteria ground meat
Parameters (quantitative): Coliforms [cfu/g], aerobic total count [cfu/g]
Article Number: 2010936
Category: immunological, molecular biological and microbiological testing food and feed meat products
Accreditation: This proficiency test is within the scope of the A2LA and the DAkkS accreditation.
risk group 1
Frozen shipping August 2025 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.