Sensitivity range: 1.5 - 125 µm

The LiQuilaz II E15P, E20, and E20P optical liquid particle counters are volumetric monitors with sizing sensitivities from 1.5 – 125 µm.

LiQuilaz II sensors provide the same levels of accuracy, reliability and repeatability that customers have trusted for many years. LiQuilaz II sensors feature both RS-485 and Ethernet network communications. The new Ethernet capability increases product flexibility and makes installation significantly easier.

Volumetric liquid particle counters offer the highest precision possible by measuring 100% sample volumes so that short sampling intervals can be utilized without sacrificing statistical significance.

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  • Sizing sensitivities from 1.5 – 125 µm
  • 15 user-adjustable sizing channels
  • Volumetric: 100% view volume
  • Facility Net, SamplerSight, PharmaceuticalNet, or SamplerSight Pharma
  • Compact system
  • Compatible with 3rd party systems using RS 485
    Modbus protocol


  • Real-time characterization and analysis of particle concentration for immediate response to contamination
  • Optional software makes process control easy by providing alarm settings, status conditions, sampler setup, and online help
  • Volumetric measurements provide greater accuracy for tighter process control
  • Supports a wide range of applications and fluids
  • E15P, E20 and E20P are available for online use
  • E15P and E20 are available for use with syringe samplers
  • Online and batch sampling capabilities
  • RS-485 and Ethernet networking compatibility
  • Ethernet TCP/IP communication
  • Supports 21 CFR Part 11 in combination with
    SamplerSight Pharma software
  • Small footprint for easy placement anywhere in the process
  • Flexible software provides numerous viewing options for real-time or retrieved data


  • Pharmaceutical WFI, PW performance verification
  • Medical device cleanliness testing
  • Parenteral sampling
  • Detect abrasive particles
  • Continual process improvements
  • USP 788-1788 compliance with the SLS sampler family

Available Accessories

Facility Net Software

Facility Net Software

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

SamplerSight Pharma Software

SamplerSight Pharma Software

Designed to collect data from the LiQuilaz Particle Sensor, SamplerSight Pharma Software controls syringe-operated samplers, allowing operators to manage sampling requirements for batch-based operations with a comprehensive view of the batch information.

Liquid Installation Kit

Liquid Installation Kit

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

Capillary Cleaning Kit

Capillary Cleaning Kit

The Capillary Cleaning Kit flushes capillaries with a Flaretek® adapter and contains: two 10cc syringes and two Flaretek® tube fittings.

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