Description_x000D_ General description_x000D_ They are calibrated to measure high concentrations, up to 2000ppb. The exposure time is recommended for 4 hours. Sensors are sold in packs of 5 and 25 units._x000D_ Features and Benefits_x000D_ They fit into fhe Profil`air ambient sampler (Ref: PASDIS01-xEA), and analyzed with the optical reader at the end of each exposure period or after the end of sampling._x000D_ Suitability_x000D_ Fits the following instruments:_x000D_ PAKSF421_x000D_ PASDIS01_x000D_ Other Notes_x000D_ Weight: 0.25_x000D_ Temperature conditions: Cooler/Refrigerated_x000D_ Legal Information_x000D_ Profil'Air is a registered trademark of Ethera S.A.