Name: ISO 8502-9:2020 — Preparation of steel substrates before application of paints and related products — Tests for the assessment of surface cleanliness — Part 9: Field method for the conductometric determination of water-soluble salts
SKU: ISO 8502-9:2020
Price: 12600 RUB
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Overview

ISO 8502-9:2020 specifies a field method for conductometric determination of water‑soluble salts on steel surfaces prior to painting. The standard uses an adhesive extraction cell (as in the Bresle method, ISO 8502-6) and a conductometer to assess the total surface density of soluble ionic contaminants (reported as total soluble salts). It is a rapid, on‑site test for salts that form electrolytes in water - the majority of corrosion‑promoting contaminants - but it does not identify individual ions (e.g., chloride, sulphate, sodium).

Key topics and technical requirements

Principle: dissolve salts from a defined surface area with water in an adhesive cell, measure solution conductivity, and calculate total soluble salts using the method’s empirical conversion.
Sampling: uses adhesive cells and sampling procedures referenced in ISO 8502-6 (Bresle patch). Record sampling area and volumes.
Instrumentation:
- Conductometer with temperature compensation to 25 °C.
- Specified conductivity ranges and resolutions (e.g., 0–20 mS/m (0–200 µS/cm) at 0.01 mS/m resolution and 20–200 mS/m at 0.1 mS/m; accuracy ~2%).
- Beaker and syringe (if used) for sample handling.
Water quality: solvent water of at least ISO 3696 grade 3 (typically

ISO 8502-9:2020

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Abstract

Overview

Key topics and technical requirements

Технические детали

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