Professional Manual SDI Test Kit (Manual SDI Test Kit with PP Filter)

Discover our trusted Manual SDI Test Kit with PP filter ，the model is FI-47. This portable SDI test kit is ideal for water treatment engineers, power plant maintenance personnel, and laboratory technicians for quickly and accurately determining the Silt Density Index (SDI) in water samples. This Manual SDI Test Kit strictly adheres to the ASTM D4189-07(14) international standard, providing a complete, out-of-the-box solution to ensure reliable and consistent test results every time.

Product Overview: Why Choose Our Manual SDI Test Kit?

Our Manual SDI Test Kit features a compact design prioritizing practicality and durability. The system includes a pressure reducing valve, a 47mm membrane filter, SDI filter membranes, and matching valves and fittings. The membrane filter is made of PP plastic , fully complies with the ASTM D4189-07 international standard. With just a 500ml measuring cup and a stopwatch to perform SDI measurements, making it ideal for the water treatment industry. Whether for daily monitoring of reverse osmosis (RO) system feedwater or on-site water quality assessment, it serves as your indispensable, reliable assistant.

Product Advantages

• Compliance: Strictly adheres to ASTM D4189-07(14） testing standards
• Portable Design: Lightweight structure, suitable for on-site testing
• Easy Operation: Integrated design, quick start to testing
• Durable and Reliable: Premium plastic construction offers corrosion resistance and wear durability

Configuration List

We offer three configuration options:

• High: One SDI instrument, 100 pieces SDI filter membranes, one tweezer, one stopwatch, one 500ml measuring cup, and one portable toolbox.
• Standard: One SDI instrument, 100 pieces SDI filter membranes, one tweezer.
• Basic: One SDI instrument, 25 pieces SDI filter membranes.

Required accessories

• Precision stopwatch ：0.2-second accuracy
• measuring cup：500ml PP
• SDI membrane :47mm diameter, 0.45μm pore size test filter membrane (consumable)

Optional Accessories

• SDI booster pump（Inlet pressure <35psi）
• portable toolbox

Application Scenarios

This Manual SDI test kit is widely used in the following fields:

•  Feedwater monitoring for reverse osmosis (RO) pretreatment systems
• Water quality testing of boiler feedwater in power plants and chemical plants
• Industrial water quality assessment
• Laboratory water sample analysis and research
• Any situation requiring monitoring of the potential for suspended solids and colloidal contamination in water

Frequently Asked Questions (FAQ)

Q: Are any additional accessories required?

A: The kit offers different configuration options. If you choose the high configuration, no additional accessories are needed. For the standard or basic configurations, which include the main components, we recommend having a stopwatch and a 500ml measuring cup on hand.Of course, the inlet pressure must exceed 35 psi (0.25 MPa).

Q: Can SDI be tested if the inlet pressure is less than 35 psi (0.25 MPa)?

A: If the inlet pressure is less than 35 psi (0.25 MPa), it cannot be ensured that the pressure before the membrane will remain at 30 psi during testing. Please use an SDI booster pump to increase the water sample pressure to above 35 psi.

Q: Is this manual SDI tester easy to operate?

A: Yes, our SDI test kit prioritizes user-friendliness. It includes clear operating instructions, enabling even non-professionals to perform accurate SDI measurements independently after brief training.

Q: Is technical guidance provided?

A: We provide SDI operating manuals, technical support services, and instructional videos for reference.

Q: What is the filter membrane’s lifespan?

A: Each filter membrane is for single use only. Configurations can be selected based on testing frequency.

Q: As the filter membrane is a consumable, how can I purchase it?

A: We offer dedicated test filter membranes with a 47mm diameter and 0.45μm pore size that are perfectly matched to this SDI test kit. You can easily order them individually from our company.

Q: How is the accuracy of the test results ensured?

A: This product strictly adheres to ASTM D4189-07 standards throughout design, manufacturing, and component selection. The included pressure-reducing valve and precision valve ensure stable pressure and flow during testing—critical for obtaining accurate SDI values.

Get your professional manual SDI testing kit today and provide reliable water quality assurance for your system!