SDI KIT (SilT DENSITY INDEX)
Suspended solids and colloidal materials in feed water are one of the biggest problems in reverse osmosis systems. Even though most systems have some pretreatment including 5 microns pre filters, these fine particles are responsible for fouling of reverse osmosis membranes.
In order to have some measure of the degree of this fouling problems, a concept called silt density index is used. Here a 0.45microns filter is exposed to the feed water under pressure and filtration rates are calculated . A detailed description of the test is available in our operating manual.
*500ml.measuring jar and filter paper.