Automatic SDI Tester

Automatic Silt Density Index Testing Benefits

• Extremely Accurate: Microprocessor precision plus high resolution flow measurement provides silt density index test accuracy and repeatability far beyond hand testing.
• Performs SDI-5, SDI-10 and SDI-15 tests in both 100ml and 500ml sample sizes for more meaningful silt density index results and a complete picture of filter plugging.
• Standards compliant 47 mm membranes for lowest cost, worldwide availability. Our membranes meet the new ASTM D4189-07 standard for silt density index testing.
• Battery Powered and light weight for true portability. Up to 13 hours of testing between charges.
• Continuous flow readout (mL/min) provides detailed information in real-time of the rate of filter plugging. This data can be used to manually plot Modified Fouling Index (MFI)-like data.
• Routine SDI measurement can prevent membrane fouling and improve the efficiency of RO systems.
• Automated test process for simpler, easier and accurate SDI measurements.
• Unattended operation. Start the test and return in 15 minutes for the results – saves you time.
• Real-time display of results including SDI, current flow rate and elapsed time. End of test display includes SDI

Simple SDI Automatic Tester Features

• Rugged Crush-Proof Carrying Case: durable protection for the meter, withstands harsh field conditions.
• Pressure Gauge: Accurate, easy to read.
• Full Port ½” Ball Valve: Minimal pressure drop – allows testing on as low as 35 psi feed pressure.
• Microprocessor Based Controller: Highly accurate and easy to use
• SeaWater Compatible: Fully non-ferrous water path is compatible with sea water and other corrosive waters.
• Clear, easy to read LCD display prompts the operator through the test procedure and displays current test data while silt density index tests are underway.
• Audible alerts notifies the operator at the end of the silt density index test as well as if any errors have occurred.
• In-field calibration and repair. Modular design for easy field repairs. Sensor calibration is easy to perform in the field.
• Rugged, durable, reliable. Carefully selected components ensure years of trouble-free silt density index testing.
• Linear, precise pressure regulation for accurate results even on high SDI waters. Provides set-it-and-forget-it convenience.
• Built to the ASTM D 4189-07 standard for silt density index testing accuracy and repeatability greatly exceed the criteria of the silt density index standard.
• Dimensions: 14”W x 11.25”D x 4.75”H  (356mm W x 286mm D x 121 mm H)
• Weight:  6 lbs (2.7 kg)
• Battery Type:  6 volt, 3000 mAH Lithium Polymer (LiPo)
• Battery Life:  At least 5 years of typical usage.  (Over 300 full charge cycles)
• Battery Capacity:  Approximately 30 hours of testing.
• Power Supply:  5VDC, USB-A Port charger, (e.g. phone, tablet or other devices charger (user supplied))
• Operating Pressure: 35 – 100 psi
• Temperature: 35 – 100°F

New and Improved Simple SDI version 2.0 is the direct replacement for the original Simple SDI, which was retired in 2020.

New and improved features of Simple SDI 2.0 include:

• New Lithium Polymer battery for more tests per charge, lighter weight, longer life, and universal voltage. USB charging cable is included.
• New built-in prefilter to ensure that the flow sensor is protected from particulates.
• New dual pressure regulator design provides safe operation up to 100psi and improves accuracy by regulating the pressure to the test regulator.
• Improved controller now has backlit LCD, real time clock, data storage, and USB computer interface.
• Watertight enclosure (IP66/67) protects electronics.

Prevent Membrane Fouling with Silt Density Index Testing

• On-Site Testing for New Water Treatment Equipment Design
• Water Treatment System Operating Conditions Monitoring
• Troubleshooting
• Identify critical feed water issues to ensure proper operation of membrane water treatment systems including
  • Reverse Osmosis Systems
  • UltraFiltration Systems
  • MicroFiltration Systems

Spare Parts and Optional Components for simple SDI 2.0:

Booster Pump Assembly	Membrane Filters (100) 0.45 Micron, 74 mm	5 Micron Prefilter

simple SDI v1 (obsolete) Consumables Support Products:

simple SDI was repalced with SIMPLESDI-2.0 in 2020.   Applied Membranes will continue to offer product support and consumables for the retired SDI test kits.