QM Solutions has announced the addition of the Merck MAS-100 microbial air monitoring system to its range of air samplers.
The company said the Merck MAS-100 systems are the most accurate examples of the Anderson impaction principle in microbial air sampling.
Air is aspirated though a perforated lid with 400 holes, impacting growth media in a standard 90mm Petri dish or 60mm contact plate.
A mass flow sensor assures a constant air flow rate (real time) of 100 L/min (except the MAS- 100 Eco) continuously regulating the flow during sample collection and automatically adjusting for variations in media fill levels and individual perforated lids as well as air density.
Four different versions of MAS-100 microbial air samplers are available for different applications, and each complies with the guidelines as specified in ISO14698-1.
Both the MAS-100 and MAS-100 Ex portable air samplers were designed for use in clean rooms and will not produce disturbance in a laminar flow environment.
These compact devices are the preferred choice for those demanding the highest quality in microbial air monitoring with the highest airflow accuracy of +/- 2.5 per cent.
The MAS-100 Ex is approved for use in areas where there is an explosion risk, in accordance with SN-SEV (NIN) for Zone 2.
The MAS-100 Eco is a small, lightweight unit that is ideal for the clean room but also air monitoring in food and beverage production areas.
It offers many of the same features found on the standard MAS-100 air sampler, without the mass flow sensor.
The handle doubles as a stand and an optional tripod adapter attaches to the handle for fixed applications.
The MAS-100 CG Ex system enables quick, easy and accurate testing of compressed gases for microbial contamination and is approved for use in Zone 2 explosion hazard areas.
The MAS-100 CG Ex is calibrated with compressed air.
Due to its mass flow sensor technology, QM Solutions said only a mathematical correction factor is required to sample other gases (pre-programmed for nitrogen, carbon dioxide and argon gas).
