Ultra DI® 50 Liquid Particle Counter

The Ultra DI® 50 Liquid Particle Counter is designed specifically for de-ionized (DI) water systems and will count and size contaminants as small as 0.05?m. Larger sample volumes and ultra-low zero counts detect smaller excursions with more relevant statistical data, while shorter sample intervals speed up your analysis time. Respond immediately to contamination with real-time measurement of particles, and Save time with fast clean-up and the ability to move quickly from one sample point to another. Its low zero count, large sample volume and high counting efficiency provide unsurpassed performance.


FacilityNet Software provides more sophisticated process control
Set tighter process control limits with low sample-to-sample variation
Detect process variations more quickly with improved sensitivity

Features & applications


Low zero count
Large sample volume
Faster time to statisitically significant data
Compatible with FacilityNet Software
Utilizes existing network with ethernet communication
Connects directly to PLC and SCADA systems with 4-20mA
Compatible with ozonated water
Stainless steel housing and dual HEPA filtration allow use in dirty environments


Quantifying particle concentration in state-of-the-art ultra pure 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 monitoring
Manufacturing process

Available accessories

All available accessories


Liquid Installation Kit

For use with online applications, the Liquid Installation Kit includes: a Flaretek® flaring tool, five caps, 25ft of 1/4in Perfluoroalkoxy alkanes (PFA) tubing and male connectors.


Facility Net Software

Facility Net Software provides a solution for comprehensive environmental monitoring, including a real-time and historical data display. Compatible Particle Measuring Systems particle counters and molecular contamination monitors, as well as various third-party products.


Downstream Flow Controller

The Downstream Flow Controller for de-ionized water utilizes a rotameter flow indicator.

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