Portable Particle Counter Model 3910 and 3905 Featherlight Smallest 6-channel, Portable Airbourne Particle Counter The new 3910 & 3905 are the smallest 6-channel portable particle counters in the industry; with a 50 LPM and 1 CFM flow rate respectively and a 0.3 micron sensitivity. Both units feature a large color touch screen, streamlined, user-friendly interface and pre-programmed standards mode to guide you through the measuring and certification process it may also be the most helpful. An optional Climomaster environmental sensor provides the ability to measure air velocity, temperature and humidity making these instruments the ultimate tools for cleanroom certification. • Cleanroom Certification • Critical Environment Monitoring • HEPA Filter Performance Testing • The unit is featherlight and the smallest in the industry. • 28.3 lpm (1.0 cfm) or 50 lpm (1.77 cfm) flow rate speeds the sampling process. • Simultaneously measures and displays up to 6 particle sizes from 0.3 to 10 microns. • Fully compliant with ISO 21501-4 calibration standard. • Enables you to certify cleanrooms up to ISO Class 2. • 21 CFR Part 11 compliant with IQ/OQ documentation available • Multi-standard mode simplifies cleanroom ceritifcations based on ISO 14644, FS 209E, BS 5295 and EC GMP. Large, color touchscreen with an easy to navigate, user-friendly interface uilt-in printer and onboard datalogging up to 10,000 records). Stainless, cleanroom-friendly enclosure. Optional Climomaster™ environmental probe adds the ability to measure airflow, temperature, and humidity. Differential pressure sensor available as an option