Description
Silt Density Index (SDI) kit is used to determine the fouling potential of water feeding a membrane filtration process such as a reverse osmosis (RO) system.
SDI test is defined by its specific procedure (ASTM D4189).
The ASTM procedure should be referenced for a more detailed description of the procedure.
The nature of this sdi test is such that it cannot be run in the laboratory.
The SDI test should be run daily on the water entering the RO membranes after the cartridge filters.
This frequency can be reduced to weekly once background data proves that less frequent sampling is sufficient. As such, a
sample tap should be installed on the RO machine after the cartridge filters.
It is recommended practice to keep a record of SDI values and filters to observe changes over time.
| Metal SDI Kit |
| This Manual Sdi kit is Completely assembled in a portable, compact case, ready for on-site testing any time |
| includes ASTM instructions for measuring silt density index, |
| Minimum of 30 PSI water pressure required, |
| Optional Pump Assembly Kit available for pressures below 30 PSI. |
| Reliable •Versatile usage. •Aesthetically designed •Energy efficient |
| EQUIPMENT SUPPLIED |
| 1/2” Ball Valve (S.S) |
| 1/2” needle valve (Brass) |
| Pressure Gauge (M.S) |
| Filter Disk Holder (0.47mm) (S.S) |
| 500ml Graduated Cylinder (poly propylene) |
| 0 to 100 Centigrade mercury thermometer |
| SDI paper membrane disc |
| ½ connection for easy connect to the tap connection |
| Forcep |
| DOCUMENTATION: User’s manual. |
