Particle Sizing Systems

Particulate Monitoring Syringe Loading Counter



The PSS 780-SIS has been designed specifically for contamination monitoring conforming with:

  • USP788
  • USP789
  •  USP 729 Method II.

The 780-SIS determines low concentration particulate counts with a high resolution sensor using the SPOS (Single Particle Optical Sizing) principle.

The 780-SIS is designed around a high precision syringe drive drawing a sample through the particle counter sensor.

The syringe volume can be configured to suit the sample type from micro R and D substrates to larger volumes with low particulate counts.

The fluidic path is designed with a fill loop so that the sample can be repeatedly drawn backwards and forwards through the sensor to build up count statistics..

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  • Multiple Sensor Configurations
  • Custom sampling configuration with sample loop size and material (Peek,Teflon,Stainless Steel)
  • 21 CFR Part 11 Compliant Software
  • Optional mechanical stirring
  • Small volume Analysis and sample retrieval
  • Modular Design
  • Selectable particle distribution presentation (USP788 and 512 channel)


Particulate concentration counts for 5 and 10 microns and as an option, high resolution from 0.5 to 400 microns in 512 channels.

On site Instrument validation with

  • Volume accuracy test
  • Count accuracy test
  • Resolution test


780 SIS with Counter Module
780 SIS with Counter Module
Switch to High Resolution Distribution
Switch to High Resolution Distribution

Easy Instrument Setup
Easy Instrument Setup

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