Diesel exhaust fluid (e.g. AdBlue) testing according to ISO 22241

Diesel exhaust fluid (DEF) is an additive used in diesel-powered vehicles to help the catalytic reduction of nitrous oxides. Thus, the use of AdBlue and other exhaustive fluids improves ambient air quality.

DEF testing package according to ISO 22241:2019 includes the measurements listed below:

  • Urea content (ISO 22241-2C)

  • Density at 20 °C (EN ISO 12185)

  • Refractive index at 20 °C (ISO 22241-2C)

  • Alkalinity as NH3 (ISO 22241-2D)

  • Biuret (ISO 22241-2E)

  • Aldehydes (ISO 22241-2F)

  • Insoluble matter (ISO 22241-2G)

  • Phosphate (ISO 22241-2H)

  • Determination of Al, Ca, Cr, Cu, Fe, K, Mg, Na, Ni, and Zn content (ISO 22241-2I)

Suitable sample matrices
Diesel exhaust fluid
Required sample quantity
1 l
Typical turnaround time
3 weeks after receiving the samples
Available quality systems
Measurlabs validated method

Pricing and online order

Price per sample (Excl. VAT):
315 €

We also charge a 97 € service fee per order.

Large batches of samples are eligible for discounts.

Samples are entered during checkout.

Our experts review all orders to ensure the testing method is suitable for your needs and samples.

Questions? We're happy to help.

Questions? We're happy to help.

Ringing phone
...and more than 700 other happy clients

Ask for an offer

Fill in the form, and we'll reply in one business day.

Answering the following questions helps us prepare an offer for you faster:

  • How many samples do you have and what is the sample material?
  • Do you have a recurring need for these tests? If yes, how often and for how many samples at a time?

Have questions or need help? Email us at or call +358 50 336 6128.