The dilution system DIL550 is designed to accurately dilute aerosols to produce a defined particle concentration and carry out certain measuring tasks. The main application of the dilution system DIL550 is in the verification of test aerosols for testing clean rooms. EN ISO 14644, Part 3 defines the necessity of appropriate dilution systems when using test aerosols for verification. According to Standard VDI 2083 for testing clean rooms and work benches it is compulsory to carry out measurements with increased concentrations in the incoming aerosol. Needless to say, a huge number of further applications can be covered with the dilution system DIL 550, e.g. laminar flow boxes, work benches etc.

Optical particle counters, e.g. the LAP 340, have a physical limit up to which concentration they work accurately. Is this concentration exceeded errors will inevitably occur. By using the dilutor DIL550 upstream of a particle counter a dilution factor of up to 100 can be achieved. Thereby particle concentrations of >10⁶ Particles per cf (1cf = 28,3l) can be reduced to 10⁴cf–1. This will put the particle concentration well within the range of standard particle counters.