For technical cleanliness and cleanroom applications, PMT offers the PartSens 4.0. This portable measurement system with a wireless sensor head enables fast and direct detection of particulate contamination on surfaces. The particles are classified by size, quantity, as well as by metallic and non-metallic particles and fibers. The system's mobile design and ease of use make it ideal for companies that need to ensure clean surfaces in production environments or on products. The oblique lighting technology, compliant with ISO 14644-9, guarantees reproducible and highly precise measurement results, replacing complex and error-prone methods. The results are displayed wirelessly immediately after sampling, can be saved locally or on a network, or printed via an external printer.