Comprehensive Monitoring Solutions by Merck

When monitoring cleanrooms and isolators, diligence is key. At Merck and GSC, we offer a variety of easy-to-use solutions, which help you ensure the highest hygiene standards in critical environments. The MAS-100 NT® and MAS-100 NT Ex® portable microbial air samplers are the industry standard for use in cleanrooms and critical environments.

MAS-100® Microbial Air Samplers

The MAS-100® series is the most complete and accurate system for reliable and easy monitoring of ambient air:

• The first microbial air sampling systems with automated calibration


• Built-in air flow compensation


• Compatible with standard 90 mm Petri dishes (link to ICR settle plates) and 55-60 mm contact plates (link to ICR contact plates).


• Fully validated with ICR settle plates according to ISO 14698.

Webinar: Validation of the HEPA Filter Using MAS-100® NT

Viable Air Samplers are used for quantitative determination of airborne contamination in cleanrooms for aseptic manufacturing. Watch this short webinar to learn about the essential points of air sampling units for use in high-grade cleanrooms, along with requirements for prevention of cross-contamination.


Gulf Scientific Corporation (GSC) is a leading provider of complete laboratory solutions in the fields of analytical, life and material sciences. Founded in 1990, GSC is headquartered in Dubai, United Arab Emirates, with regional offices and supply chain distribution centers across the Middle East.