Standard / Regulation / GuidelineSTD-000002

ASTM D4189 — Silt density index (SDI) of water

Issuing body: ASTM International
Number: D4189
Status: Current

governs

Test method · MET-000002Silt density index testOpen

is cited by

Parameter · PAR-000006Silt density indexAn index of the particulate fouling potential of RO feed water, from the rate at which a 0.45 µm filter plugs at constant pressure.Open
Test method · MET-000002Silt density index testOpen

Version history

Version 1 · published 3 Nov 2026