Passive Sampler for Ozone


pollutant: O3

sampler type: badge

product number: SP20

Ο3 data sheet    



What is Ozone?

Ozone is a colorless and odorless gas. It is the main component of smog and the most widespread air pollutant. Ozone is not emitted directly into the air, but is formed by reactions in the presence of sunlight and heat. Ozone can easily be transported and therefore its health endangering occurrence is not bound to its specific sources.


Working Principle

The diffusive sampler is based on the diffusion of ozone along a tube to an absorbing medium. The chemisorption of ozone takes place by reaction with sodium nitrite. The amount of nitrate is determined by ion chromatography.

The passive samplers are constructed with a polypropylene housing with an opening of 20 mm in diameter. To reduce wind disturbance a membrane is attached, supported by a wire net. At the closed end there is a glass fibre filter dipped in a solution of sodium nitrite in acetic acid. The sampler is placed in a specially designed shelter to protect it from weather conditions during its exposure.



We strongly recommend to use this sampler with protective shelters to protect against weather influences and thus improve the measurement quality.