Reliable air pollution monitoring starts with reliable calibration.

As environmental regulations continue to tighten worldwide, the accurate measurement of pollutants such as ammonia (NH₃) has become increasingly important for industrial plants, environmental monitoring networks and research laboratories. 

PermaCal from LNI Swissgas is a high-precision permeation system designed to generate accurate and traceable gas standards for the calibration and linearisation of analysers, monitors and sensors. Based on advanced multipoint dilution and permeation oven technology, PermaCal enables stable and repeatable gas generation, even for compounds that are not stable or available in traditional gas cylinders.

The system is particularly suited for air pollution monitoring applications, including the calibration of instruments measuring compounds such as SO₂, NO₂ and NH₃. Accurate ammonia monitoring is becoming essential in many sectors, from industrial emissions control to environmental compliance and atmospheric research. By providing precise and controlled gas mixtures, PermaCal supports the verification and performance validation of analytical instruments used in these demanding applications.

Designed with flexibility and reliability in mind, PermaCal is available in both laboratory and rack configurations and can support multiple permeation ovens for different compounds. A portable version is also available, featuring battery-powered operation with an integrated pump and dryer to maintain stable flow and oven temperature even during transport. This makes it particularly useful for field calibration or installations in hard-to-reach locations.

Traceability is a key element of the system design. All critical physical parameters can be linked to national standards, and PermaCal features a unique extractable oven temperature sensor that allows direct calibration, ensuring the highest level of measurement confidence.

By combining permeation technology, precision gas generation and traceable calibration, PermaCal provides a powerful solution for environmental monitoring, analyser calibration and research applications.