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Petroleum and related products. Determination of pH of fire-resistant fluids within categories HFAE, HFAS and…

Petroleum and related products — Determination of pH of fire-resistant fluids within categories HFAE, HFAS an…

Overview ISO 20843:2011 specifies a laboratory test method for the determination of pH of fire‑resistant hydraulic fluids classified as HFAE, HFAS and HFC (per ISO 6743‑4). The standard describes sam…