The Tech Inc. Manual SDI Test Kit (ASTM D4189) measures the silt density index (SDI) of RO and NF feed water to ASTM D4189. The kit holds pressure at 2.07 bar (30 psi) across a 47 mm, 0.45 µm filter, and the operator times the flow at the start and after 5, 10 or 15 minutes.

What the kit includes

Pressure regulator and 0 to 4 bar gauge
SS 47 mm filter holder
Ball valve and quick connection
Graduated cylinder and timer
Pack of 0.45 µm MCE filters
Carry case

Applications: RO and NF plant monitoring, pretreatment checks, membrane warranty records and field surveys.

Send your membrane type, test conditions and sample size to mail@techincresearch.com or call +1 (289) 622-1032 for a configuration, datasheet and quotation.

Manual SDI Test Kit (ASTM D4189)

Manual kit – portable, no power needed.

Automatic SDI analyser – see our online SDI analyser for continuous monitoring.
Test pressure: 2.07 bar (30 psi)

Filter: 47 mm, 0.45 µm MCE

Standard: ASTM D4189

Connection: 1/4 in
Standard method – to ASTM D4189.

Portable – no power needed.

Low cost – test with standard filters.
Established manufacturer – part of the Davey Group since 1990, exporting to more than 110 countries.

Everything under one roof – in-house mechanical fabrication, electrical works, PLC and SCADA automation, and R&D.

Complete scope – design, supply, installation, commissioning, factory acceptance testing (FAT) and site acceptance testing (SAT).

Trusted by Saudi Aramco – an established supplier to Saudi Aramco.

Certified management systems – ISO 9001, ISO 14001 and ISO 45001, with CE marking.

Close to your project – offices in Chennai (India), Toronto (Canada), Tallinn (Estonia) and Al Khobar (Saudi Arabia).

For this product – we make SDI kits and online SDI analysers, and the filters they use.
Engineering to your P&ID, data sheets and company standards; drawings submitted for approval before manufacture; factory acceptance testing (FAT) with client or third-party inspection; export packing and full documentation dossier; installation, commissioning and site acceptance testing (SAT); operator training, spares and after-sales support worldwide. Contact mail@techincresearch.com or +1 (289) 622-1032.
How to Run an SDI Test to ASTM D4189 with a Manual Kit
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