Ultra DI® 20 Liquid Optical Particle Counter BENEFITS High sensitivity • Advanced laser optics and sensors enable detection of particles down to 20 nm (9 nm Au) • Obtain meaningful statistical data to detect particle excursions quickly • Fast sample cleanup shortens the time to move from one sample point to another Improved monitoring • Larger sample volume and low zero counts detect smaller excursions with relevant statistical data • Respond immediately to contamination with real-time particle measurement • Facility Net software provides more sophisticated process control with: • sensor status • tabular and SPC charts • time plots • historical event log records • email notification Ultra DI particle counters are designed and optimized for the world’s most advanced ultrapure water monitoring needs. By counting and sizing particles as small as 20 nm, the Ultra DI 20 system provides unsurpassed particle detection: • Compatible with ozonated water • Two counting modes • High resolution – for pure environments • High concentration – for filter challenge tests and lower purity environments • Utilize existing network with Ethernet • Large sample volume • Connect directly to PLC and SCADA systems with • High counting efficiency • Stainless steel housing and dual HEPA filtration for use in clean environments • Quantifying particle concentration in state-ofthe-art ultrapure water (UPW) systems • Filter efficiency measurements • Trending analysis at lower particle concentrations • Detecting bacterial growth in UPW systems • Episodic event tracking and alarming • Continuous system monitor

Ultra DI® 20 Liquid Optical Particle Counter Size range Channel sizes Flow rate (ml/min) High Resolution Mode: 2500 P/ml > 20 nm; 1000 P/ml > 100 nm Sample temperature Maximum pressure Zero count Exterior surface Stainless steel Wetted surface materials Teflon®, Kel-F®, fused silica, Viton®, 96% Alumina Ceramic, and Simriz® 485 Laser classification Class I complies with US21 CFR 1040.10 and EN60825-1. Internally an enclosed Class IV laser is used per EN60825-1. Ethernet, 4-20 mA (5 outputs: 4 particle channels, 1 instrument status) RS-232 (set up and diagnostics only, no data) Status indicator...