Name Planned shipping method Start Date  
Aerobic total count drinking water
Parameters (quantitative): aerobic total count 36°C [KbE/ml], aerobic total count 22°C [KbE/ml]
Article Number: 2010656
Description: water quality
Category: immunological, molecular biological and microbiological testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
risk group 1
Frozen shipping April 2026 Add to cart
Aerobic total count drinking water
Article Number: 2010656
April 2027 Add to cart
CO2 evolution test (ISO 9439, OECD 301B)
Parameters (quantitative): CO2 [mg]
Article Number: 2011136
Description: The samples should be tested for biodegradability under aerobic conditions at 25°C over a period of 28 days.
Category: immunological, molecular biological and microbiological testing Environmental analytics biodegradation
Accreditation: This proficiency test is not included in the scope of the accreditation.
Is currently underway. Can still be booked.
Refrigerated shipping December 2025 Add to cart
CO2 evolution test (ISO 9439, OECD 301B)
Article Number: 2011136
September 2026 Add to cart
CO2 evolution test (ISO 9439, OECD 301B)
Article Number: 2011136
September 2027 Add to cart
Drinking water - 1,2,4-triazole
Parameters (quantitative): 1,2,4-triazole (CAS 288-88-0) [µg/l]
Article Number: 2011380
Category: chemical-physical testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
New proficiency testing
Refrigerated shipping November 2026 Add to cart
Drinking water - 1,2,4-triazole
Article Number: 2011380
November 2027 Add to cart
Drinking water - contaminants
Parameters (quantitative): bisphenol A (CAS 80-05-7) [µg/l], epichlorhydrin (CAS 106-89-8) [µg/l], acrylamide (CAS 79-06-1) [µg/l]
Article Number: 2011381
Category: chemical-physical testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
New proficiency testing
Refrigerated shipping November 2026 Add to cart
Drinking water - contaminants
Article Number: 2011381
November 2027 Add to cart
Drinking water - pH, conductivity (ISO 10523, ISO 7888)
Parameters (quantitative): pH value [-], electrical conductivity [mS/m]
Article Number: 2011379
Category: chemical-physical testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
New proficiency testing
Shipping at room temperature December 2026 Add to cart
Drinking water - pH, conductivity (ISO 10523, ISO 7888)
Article Number: 2011379
December 2027 Add to cart
Elution of solids - percolation method (DIN 19528)
Parameters (quantitative): chromium (1st percolation) [µg/l], molybdenum (1st percolation) [µg/l], vanadium (1st percolation) [µg/l], sulphate (1st percolation) [mg/l], PAH15 (1st percolation) [µg/l], chromium (2:1-column percolation) [µg/l], molybdenum (2:1-column percolation) [µg/l], vanadium (2:1-column percolation) [µg/l], sulphate (2:1-column percolation) [mg/l], PAH15 (2:1-column percolation) [µg/l]
Article Number: 2011277
Description: The percolation should be carried out using the detailed method according to DIN 19528. The individual values of the eluates and the calculated 2:1 column percolate value are queried.
Category: chemical-physical testing Environmental analytics soil
Accreditation: This proficiency test is not included in the scope of the accreditation.
New proficiency testing
Shipping at room temperature October 2026 Add to cart
Elution of solids - percolation method (DIN 19528)
Article Number: 2011277
October 2027 Add to cart
Enumeration moulds indoor air
Parameters (quantitative): moulds [cfu/filter]
Article Number: 2010954
Description: Possible methods for participation, e.g.: ISO 16000
Category: immunological, molecular biological and microbiological testing Environmental analytics indoor air
Accreditation: This proficiency test is not included in the scope of the accreditation.
risk group 1
Refrigerated shipping July 2026 Add to cart
Enumeration moulds indoor air
Article Number: 2010954
July 2027 Add to cart
Enumeration of aerobic total count in recooling water
Parameters (quantitative): aerobic total count 36°C [cfu/ml], aerobic total count 22°C [cfu/ml]
Article Number: 2010962
Description: water quality
Category: immunological, molecular biological and microbiological testing Environmental analytics recooling water
Accreditation: This proficiency test is within the scope of the A2LA accreditation.
risk group 2
Refrigerated shipping July 2026 Add to cart
Enumeration of aerobic total count in recooling water
Article Number: 2010962
July 2027 Add to cart
Enumeration of E. coli & coliforms in drinking water
Parameters (quantitative): E.coli [cfu/100ml], Coliforms [cfu/100ml]
Article Number: 2010654
Description: water quality Separate evaluation of the parameters E. coli and coliform bacteria
Category: immunological, molecular biological and microbiological testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
risk group 1
Frozen shipping April 2026 Add to cart
Enumeration of E. coli & coliforms in drinking water
Article Number: 2010654
April 2027 Add to cart
Enumeration of E. coli & coliforms in surface and waste water
Parameters (quantitative): E.coli [cfu/100ml], Coliforms [cfu/100ml]
Article Number: 2010670
Description: water quality Separate evaluation of the parameters E. coli and coliform bacteria
Category: immunological, molecular biological and microbiological testing Environmental analytics surface- and waste water (bath water)
Accreditation: This proficiency test is not included in the scope of the accreditation.
risk group 1
Frozen shipping April 2026 Add to cart
1 Parameters with this label depend on the number of participants and/or the choice of materials.
Under certain circumstances, this parameter may not be available in the proficiency test.