Sequoia Scientific (Bellevue, WA) has announced that two new accessories are now available for its LISST-200X submersible laser-diffraction instrument: the Path Reduction Module (PRM) and Full Path Flow Through Chamber.
The PRM uses a custom-made quartz cylinder to replace a portion of the optical path. The quartz cylinder fits against the smaller transmit window, reducing the turbid water path from 25mm to 5mm. By reducing the optical path to 5mm, the maximum concentration measured by the LISST-200X increases by a factor of five. The PRM is easy to install and can be done in the field. It has been designed to minimize disturbance to the flow as much as possible. Because the PRM adds additional optical surfaces it is important to do a clean water background after installing the PRM. Since the standard test chamber will not fit when the PRM is installed, Sequoia offers a large-volume test chamber that allows the optics end of the LISST-200X to be submerged with the PRM installed. This chamber is available as a separate option.
The Full Path Flow Through Chamber allows the LISST-200X to be used in a flow-through arrangement. This allows the instrument to be included in inline applications on a ship or pumped operations in the lab. The chamber is easily installed because its four pieces are simply inserted in the optics end of the LISST-200X and bolted together with thumbscrews. The sides are made of clear acrylic so that flow can be monitored. The inlet and outlet have female ½” NPT threads with barb fittings for ½” tubing pre-installed. The chamber is suitable for pressures up to about 10psi or 0.7 bar. Applications for the chamber include underway flow-through systems and laboratory testing such as sample testing or flume monitoring.
Sequoia Scientific will be showcasing the LISST-200X at Ceramics Expo this month
Sequoia Scientific will exhibit on Booth 641
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