On plain yogurt / fermented milk - 2026

Proficiency testing

Home Proficiency testing Physico-chemistry - On plain yogurt / fermented milk - 2026

Methods / Analytes

fat determined using the gravimetric method, and dry matter and titrable acidity determined using any method


Number of samples

6 samples with varying amounts of:
- fat: 0.6 to 9 g/100 g
- dry matter: 12 to 20 g/100 g
- titrable acidity: 0.8 to 2 g/100 g


Packaging

about 80 g in 120 ml polypropylene vials with locked lids


Preservation

addition of Bronopol to the samples (final concentration: 0.02 %)


Dispatch

in insulated box with ice packs by express carrier (see regulation for shipping times)


Storage in the laboratory

at 4 (± 2) °C


Validity of the samples

testing must be carried out within 7 days after the date of dispatch


Calendar of dispatch :

 

Sample dispatch 2026/03/30 2026/10/05
Return of results to ACTALIA Cecalait 2026/04/07 2026/10/13

Subscription at least 10 days before each dispatch

Rates

Members Non-members
Registration fees per shipment 70.14 € 105.16 €
Participation fee per tested method 70.14 € 105.16 €
Dry matter - Titrable acidity (Supplement) 70.14 € 105.16 €

As the calculation of the dry matter content of yoghurts and fermented milks requires the titratable acidity value of the product, this criterion will be a combined dry matter / acidity criterion for which a performance evaluation will be carried out for each element. : dry matter and acidity. You will therefore receive two results sheets to complete: - A results sheet for the dry matter of each sample (including the titratable acidity value in its calculation) - A results sheet for the titratable acidity of each sample


Special conditions :

  • For groups from 10 to 24 participating laboratories: 10 % discount,
  • For groups from 25 participating laboratories: 15 % discount

Payment conditions :

within 1 month of receiving invoice

Formulas

  • Fat: gravimetric method
  • Dry matter - Titrable acidity




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Contact us

ACTALIA Cecalait

Rue de Versailles
BP 70129
39801 POLIGNY CEDEX
FRANCE

Tel : +33 (0)3 84 73 63 20
Fax : +33 (0)3 84 73 63 29

cecalait[at]actalia.eu

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