Wall-Wash Chloride Check

Detect chloride contamination in cleaned tanks via silver-nitrate reaction. Threshold: 1 ppm (1 mg/L) for methanol / ultra-clean cargo.

TankerTank cleaning

Chloride concentration measuredppmNext cargo grade

Threshold for cargo grade: 1ppm

Result: Pass (≤ 1 ppm)

Changing the inputs requires JavaScript. The calculator above shows its default inputs and result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

\text{Chloride}_\text{measured} \leq \text{Threshold}_\text{grade}

Symbol	Meaning	Unit
$Cl⁻$	Chloride concentration	ppm (mg/L)

Source: IP 474 - Chloride in alcohols; Methanol Institute - Tanker Handling Guidelines

In short

Detect chloride contamination in cleaned tanks via silver-nitrate reaction.

Learn the theory Marine Tank Cleaning and Crude Oil Washing