MAS-100 NT® Ex serves to measure the microorganisms in clean rooms and sterile environments especially in pharmaceutical companies and hygienically critical areas. These compact yet sophisticated devices are the preferred choice for those demanding the highest quality in microbial air monitoring. Both systems utilize either 90 mm Petri dishes or 60 mm contact plates allowing for a low operating cost and greater flexibility.

Sampling at 100 liters per minute, these systems have the highest airflow accuracy available at ±2.5%, compared to others that can be as high as ±10%. The MAS-100 NT™ operates with a highperformance suction device, and the aspirated volume is continuously monitored.

The system measures the inflow of air and regulates the aspirated volume to a constant value of 100 liters per minute. The MAS-100 NT™ automatically regulates this volume according to pressure and temperature and thus give all the time comparable results. For measurement in pharmaceutical industry the recommended sampling volume - according to international guidelines - should be 1000 liters.

The MAS-100 NT™ is an improved version of the MAS-100. Improved electronic communication features, validated software, easy and automatic calibration and added safety feature makes this airsampler unique. The impaction speed was also improved and the system is now delivered with a sampling head of 300 x 0.6 mm holes. All parameters are controlled and can changed from the PC software or may be programmed directly on the unit.

The new sampler is very easy to handle. Hard- and software have been developed according to GAMP4. The total system is fully validated. Improved communications RS-232, USB, are available. All functions and parameters as well as the calibration procedure can be done with the new MAS-100 NT™ calibration and communication-software. They can also be programmed directly on the unit. A Large Graphics display on the unit allows the selection of all relevant factors. An alarm- and sample-log records the last 100 events and may be exported or printed at any time. As in other MAS Systems the mass flow is measured and guarantees a flow of 100 liters/min. The MAS-100 NT™ is validated in accordance with the EN ISO 14698 standard. Unique: The MAS-100 NT® has an integrated automatic calibration function. This guarantees accurate, reliable and independent free from human error calibration results.