Spectrex PC-2200 in-situ and PC-2300 portable laser particle counters

The Spectrex PC-2200 in-situ laser particle counter and PC-2300 portable laser particle counter are designed to permit thorough inspection of bottled and flowing liquids without consuming the sample. The sample is placed in a specialised glass bottle or beaker and inserted into the instrument for counting - eliminating sample flushing and making handling clean and simple. Oil immersions and other liquids can be counted by adjustments made by SuperCount software. The PC-2200 can also count particles inline using a flow-through cell.

Using the principle of ‘near angle light scatter’, a revolving laser beam passes through the walls of the beaker or flow-through cell. When directed through a central ‘sensitive zone’, the particle counters not only count the particles in suspension, but tabulate their size, from 0.5 to 100 µm in diameter. The analog signals generated by the light pulses are routed to a computer and digitised.

In the PC-2300, a scanning laser beam automatically quantifies small particulate matter, presenting the results on a digital display. A minimum size selector is provided for this measurement and is normally set to 1 µm. The direct connection to a computer with the company’s interface card, cable and software gives full automatic sizing and particle counts. The counter is ruggedly constructed with all the optical members mounted on one solid aluminium base plate.

The units come with three sealed calibration standards, each containing a precise number of NIST traceable polymer spheres of known concentration. The suspensions are sealed with inert argon gas and have proven stability.