The MET ONE HHPC 2+ is a two channel, 0.5um handheld particle counter designed as an affordable tool for the routine monitoring of controlled environments to ISO 14644 Cleanroom Classifications. Regulated and semi-regulated production environments that adhere to a GMP principle such as aseptically packaged food and beverage filling lines, hospital labs and formulating pharmacies […]


The MET ONE HHPC 3+ is a lower cost three channel instrument that is designed for contamination sensitive industrial environments.  For example aerospace or cleanroom optical component assembly where routine monitoring is conducted at 0.5um and 5um per ISO 14644 but where 0.3um sensitivity is desired for HEPA filtered workstation spot checks. Common applications for […]


The MET ONE HHPC 6+ is a full featured six channel handheld particle counter designed for a wide range of tasks in high technology cleanroom manufacturing environments such as semiconductor or flat panel display manufacturing.  The unique cradle provides convenient PC access to particle counting data via Ethernet or USB cable while ensuring that the […]

MET ONE 2400/2408

The MET ONE 2400 portable air particle counter has years of field-proven performance continues to make this particle counter the instrument of choice for many contamination control professionals.  Long Life Laser technology extends the average service life of the instrument’s laser to over ten years. Applications: Cleanroom environmental monitoring Cleanroom classification Cleanroom validation Cleanroom particulate […]

MET ONE 3400

The MET ONE 3400 portable air particle counter is designed specifically for ISO14644 cleanroom applications.  Organize your routine cleanroom monitoring with embedded location and sample recipe management.  The MET ONE 3400 portable air particle counter classification wizard assures compliance during periodic cleanroom certification. Applications: Cleanroom environmental monitoring Cleanroom classification ISO 14644 cleanroom verification Cleanroom validation […]

MET ONE 7000

MET ONE 7000 remote air particle counters provide high accuracy non-viable particle monitoring for cGMP/FDA compliance. Stainless steel wash-down resistant enclosure and VHP tolerant optics protect the instrument while ISO 21501 certified calibration assures accurate continuous monitoring in aseptic and sterile pharmaceutical production environments.

Facility Monitoring System

MET ONE facility monitoring systems are scalable on-line particle monitoring solutions based on open architecture communications that integrate easily with your preferred systems. Our full suite of remote and portable air particle counters feature full ISO 21501 compliance and 21 CFR Part 11 compliant data management software. ISO 14644 Compliance ISO21501 compliance ensures you are […]

EMTEK High Pressure Diffuser

Due to frequent inquiries, EMT is happy to offer a High Pressure Diffuser to assist in the testing of compressed air/gas systems for total air particulates. This diffuser can be used in conjunction with almost any Laser Particle Counter (LPC) on the market with a 1 CFM, or 28.3 LPM Flow Rate for testing of […]


The MET ONE A3432 manifold system is designed for operation with the MET ONE 3400 series portable air particle counters. The MET ONE A3432 air particle counter manifold system allows a single particle counter to sample up to 32 locations.

MET ONE 6000

MET ONE 6000 air particle counters provide ISO 21501 accuracy for continuous particle monitoring applications. A compact design with flexible sizing, flow rate and communication options address the specific needs of cleanroom environments within the pharmaceutical, semiconductor, hard disk drive and flat panel display industries. ISO 14644 Compliance ISO21501 compliance ensures you are proactively compliant […]