ISO 14644-3 requires various proofs that your cleanroom or your cleanroom facility meets the corresponding specifications. Various test routines are described in the standard, with the classification test being mandatory. This confirms cleanroom status. A particle counter determines the number concentration of particles by taking several measurements at different positions. Afterwards, the nominal cleanroom status can be confirmed or withheld in accordance with the specifications of ISO 14644. The appropriate technology solution from our company is the LAP 340 cleanroom particle counter and the CRQWin and OPQWin device control and data acquisition & evaluation software developed by Topas and running under Windows. Trust our experts.
In this test, the absence of leakage in the installed filter is checked by testing it with a reference aerosol (DEHS, Emery). The filter test is carried out in the cleanroom in the installed state using the same methods (aerosol generation, dilution, and measurement) and basic principles as during filter manufacture. For the filter integrity test, the measurement set for the acceptance of cleanroom systems is suitable, containing the components ATM 228 arosol generator, DIL 554 dilution system, LAP 340 particle counter, SYS 529 sampling probe and the CRQWin cleanroom qualification software. The combination of these components can be used, among other things, to find filter leaks in cleanroom systems. Reliable acceptance is only possible if there is a sufficiently high particle concentration on the upstream side. Since cleanroom particle counters cannot measure these high particle concentrations, the test aerosol is diluted by a defined factor using a dilution system. This makes it possible to determine the raw and clean gas concentration with only one measuring device, for example with the LAP 340 particle counter. With the SYS 529 rectangular sampling probe, the filters can be scanned up to the corners on the clean gas side.
In order to remove potential particle contamination quickly, the air exchange rate in cleanrooms must always be sufficiently high. During recovery time measurement, test aerosols are introduced into the room. The decay curve of the particle concentration and thus the recovery time of the room to the original concentration level is then measured. With this Topas proprietary technology, you will be successful in your recovery time measurements: ATM 228 aerosol generator, LAP 340 cleanroom particle counter, CRQWin cleanroom qualification software.
Condensation fog generators such as the CFG 290 make laminar or turbulent flow conditions in cleanroom areas visible and thus also detect areas with insufficient air exchange, in which particles can concentrate. Flow visualisations are therefore absolutely necessary before commissioning a cleanroom. But even if modifications are made to the cleanroom or components are adjusted to new production processes, it must be demonstrated that these do not adversely affect the flows. Topas cleanroom equipment not only complies with the standards and directives, but also offers the user state-of-the-art technology as well as sensible design and optimised handling. For us, this includes, for example, the suitability of the test equipment for mobile use as well as the use of residue-free, non-toxic mist when inspecting cleanrooms by means of air flow visualisation.
Our software for the simple evaluation of cleanrooms
Our central software systems CRQWin (ISO 14644) and OPQWin (DIN 1946-4) combine the full range of validation hardware in use and are capable to communicate with a wide variety of particle counters. Call us for an exact specification of which models we support.
Aerosol Distribution and Dilution System ADD 536 with integrated compressor for protection grade measurements in operating rooms according to DIN 1946-4
ATM 226 Atomizer Aerosol Generator for aerosol generation from liquids for mobile use (e.g. cleanroom acceptance measurement), integrated compressor
Atomizer Aerosol Generator ATM 228 for aerosol generation from liquids for mobile use, integrated compressor, pneumitic-controlled, remote controllable
Software CRQWin for acceptance testing of clean rooms according to ISO 14644-3
DIL 554 Dilution System for static dilution (1:100) of aerosols at static air flow rate (28,3 L/min) for mobile operation
DIL 554/H Dilution System for static dilution (1:100) of aerosols at static air flow rate (56,6 L/min) for mobile operation
DIL 554/T Dilution System for static dilution (1:100) of aerosols at static air flow rate (28,3 L/min) for mobile operation, 1/4'' hose connector
DIL 554/Z Dilution System for static dilution (1:10) of aerosols at static air flow rate (28,3 L/min) for mobile operation
Optical Particle Counter LAP 340 for analysis of particle size distributions and particle concentrations in aerosols, best for cleanroom applications
Rectangular Sampling Probe SYS 529 for leakage and integrity testing according ISO 14644-3 for a sample flow rate of 28,3 l/min