M Air T Air Microbial Sampler

Overview

The M Air T Air Microbial Sampler is a portable, programmable impactor-based air sampler engineered for quantitative viable microbial monitoring in controlled and critical environments. It operates on the principle of inertial impaction: aerosolized microorganisms are drawn through a precision-engineered stainless-steel micro-perforated sieve onto a pre-poured, gamma-irradiated Tryptic Soy Agar (TSA) surface housed within a dual-laminated, inert-film-sealed Petri-style culture cassette. This physical collection method ensures high viability recovery—critical for regulatory-compliant environmental monitoring where detection of culturable organisms (e.g., Bacillus subtilis, Micrococcus luteus, Aspergillus niger) directly informs risk assessment and process validation. Designed to sample up to 1 m³ of air per cycle with consistent volumetric control, the M Air T delivers reproducible colony-forming unit (CFU) data essential for ISO 14698-1:2003 (Biocontamination control), EU GMP Annex 1 (2022), and USP microbiological monitoring frameworks.

Key Features

• Pre-sterilized, gamma-irradiated TSA culture cassettes with inert protective film—prevents agar desiccation while preserving nutrient availability and surface hydration for optimal microbial recovery
• Fixed-geometry impactor head with calibrated micro-perforations ensuring repeatable air volume delivery and uniform particle deposition across the agar surface
• Integrated programmable controller with non-volatile memory for storing sampling parameters (flow rate, duration, volume), enabling unattended sequential sampling
• Extended battery life (>8 hours continuous operation) and built-in delay timer to minimize operator-induced secondary contamination during setup
• Compact, lightweight design (<1.2 kg) with ergonomic handle and tripod-compatible base for flexible deployment in laminar flow hoods, isolators, cleanrooms, and mobile labs
• Grid-etched agar surface for rapid, standardized colony enumeration without auxiliary counting aids or digital imaging systems

Sample Compatibility & Compliance

The M Air T is validated for use with standard 90 mm diameter TSA culture cassettes containing ≥25 mL of agar medium—sufficient to maintain surface moisture integrity over extended exposure periods. Its impactor geometry meets the performance criteria outlined in ISO 14698-2:2003 (Sampling equipment validation) and aligns with the principles of FDA’s Aseptic Processing Guidance (2004). Each cassette includes a traceable Certificate of Analysis and Sterility Assurance Level (SAL) documentation per ISO 11137-1:2018. The system supports GLP/GMP-aligned workflows through batch-specific lot traceability and operator-logged sampling metadata—compatible with 21 CFR Part 11–compliant electronic record systems when integrated via optional USB data export.

Software & Data Management

While the M Air T operates as a standalone hardware platform, its programmable interface supports manual parameter logging and time-stamped cycle records stored locally in internal memory (up to 100 sampling events). Optional firmware updates enable CSV export via USB-C for integration into LIMS or environmental monitoring databases. All sampling protocols—including flow calibration certificates, cassette lot numbers, and operator IDs—can be manually appended to digital reports to satisfy audit requirements under ISO/IEC 17025:2017 and pharmaceutical quality systems (ICH Q9/Q10).

Applications

• Pharmaceutical manufacturing: Routine monitoring of Grade A/B cleanroom zones, aseptic filling lines, and isolator glove ports per EU GMP Annex 1
• Biotechnology facilities: Trend analysis of airborne bioburden during cell culture operations and viral vector production suites
• Hospital pharmacy compounding centers: Environmental surveillance of ISO Class 5 hoods used for sterile IV preparation
• Food & beverage production: HACCP-mandated air testing in ready-to-eat (RTE) packaging areas and fermentation chambers
• Medical device sterilization validation: Complementary air sampling alongside biological indicator challenge studies
• Electronics cleanrooms: Discrimination between non-viable particulates (via particle counters) and culturable microorganisms using orthogonal detection methods

FAQ

What is the recommended sampling volume for routine environmental monitoring?
Standard protocols specify 1 m³ per location for Grade A/B areas; the M Air T supports configurable volumes from 10 L to 1,000 L with ±2.5% volumetric accuracy.
Can the TSA cassettes be incubated directly after sampling without transfer?
Yes—each cassette is designed for direct incubation at 30–35°C for bacteria or 20–25°C for fungi, eliminating handling steps that compromise sterility or recovery rates.
How is calibration verified and maintained?
Annual flow calibration is performed using a NIST-traceable primary standard (e.g., dry gas meter or bubble flowmeter); calibration certificates include uncertainty budgets per ISO/IEC 17025.
Is the M Air T suitable for outdoor or HVAC duct sampling?
It is optimized for indoor, low-turbulence environments; for duct applications, a dedicated isokinetic probe adapter kit is required to ensure representative sampling per ISO 8573-7.
Does the system comply with FDA 21 CFR Part 11 requirements?
The hardware itself is Part 11–neutral; full compliance is achieved when paired with validated software platforms that enforce electronic signatures, audit trails, and role-based access controls.