Resource cover coming soon

Liquid Particle Counting: Choosing Sensors and Software

2026-10-02English

Selecting a liquid particle counter involves more than its minimum particle size. The decision the results will support, required channels and data handling affect sensor and software selection. The Klotz Syringe® brochure distinguishes pharmaceutical and general liquid analysis, illustrating these differences.[1]

Syringe sampling and light extinction have different roles

The syringe system delivers liquid to the sensor; light-extinction detection evaluates signals caused by particles passing through the optical path for counting and sizing. Syringe specifications are not the particle-size capability of the instrument.[1][2]

The configuration also includes the sensor, control interface, software and computer. A magnetic stirrer is optional in the newer brochure; its appearance in a photograph does not establish inclusion.[1]

Pharmaceutical and general configurations

Task Brochure configuration example Selection focus
Pharmaceutical liquids LDS 23/25 usp; 1–50 μm; SW-CA, up to 8 fixed channels Required channels, reporting and applicable method
General liquid analysis LDS 30/30; 0.9–139 μm; SW-PE, up to 256 selectable channels Size distribution, channel settings and data processing

These are specific brochure combinations, not capabilities shared by every Syringe® configuration. Software channel count does not establish equivalent resolution of that many intervals in any sample state.[1]

Match software output to the task

SW-PE lists cumulative and differential analysis, number-, volume- and size-related processing and export. Comparing batch distributions and reporting counts in specified size channels are different tasks; provide the desired report format before selection.[1]

The brochure also lists options affecting extended size range and concentration limits. Confirm each against the final sensor, sampling and software combination instead of combining all options into one standard package.

Information to provide for selection

Specify sample type, target size interval, reporting channels, available volume, expected particle concentration and export needs. For pharmaceutical work, provide the confirmed method and quality-system requirements rather than relying on a pharmaceutical-version label.

The brochure supports configuration discussions, not a complete method, system-suitability check or validation package. The older technical sheet is used only for principle; confirm interfaces and physical versions against newer information and the final configuration.

References