Osmolality measurement

The osmolality of liquid samples is determined using a freezing point osmometer according to Ph. Eur 2.2.35.2020.

Osmolality defines the number of osmols per kilogram of liquid. Osmolality reflects the total number of dissolved ionic and molecular compounds present in a kilogram of the solution.

The results of the analysis are reported in mOsm/kg.

The analysis includes the determination of relative density (necessary value for the determination of osmolality).

NOTE: If the product is powder, please provide instructions for the preparation of the solution.

Analysis can also be done under GMP - ask for an offer from our testing expert.

Suitable sample matrices
Most non-viscous liquids
Required sample quantity
10 ml
Typical turnaround time
3 weeks after receiving the samples
Available quality systems
Accredited test method

Order this test online

First sample (Excl. VAT):
296 €
Additional samples (Excl. VAT):
225 €per sample
If you have a large number of samples, contact us for a possible discount.

Samples are entered during checkout.

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

Large number of samples or specialized needs?

Questions? We're happy to help.

Questions? We're happy to help.

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  • 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.