ISO 16482-1:2013

Overview

ISO 16482-1:2013 specifies an oven method to determine the non-volatile-matter (NV) content by mass of aqueous rosin‑resin dispersions used as binders for paints and varnishes. The procedure applies to resin dispersions with a softening point of 60 °C to 100 °C, measured in accordance with ISO 4625‑1 (ring‑and‑ball method). This standardized test gives a reproducible measurement of solid (resin) content after evaporation of water under controlled conditions.

Key topics and requirements

• Scope: NV determination for aqueous rosin‑resin dispersions; applicable softening point range 60–100 °C.
• Principle: evaporate water at 135 °C and determine the mass of the residue.
• Apparatus:
  • Analytical balance accurate to 0.0001 g.
  • Aluminium dishes, bottom diameter (45 ± 5) mm, rim height ≤ 40 mm.
  • Non‑convection oven capable of 135 ± 3 °C.
  • Convection oven for dish drying at about 160 °C.
• Reagents: chemically pure toluene and acetone for cleaning.
• Sampling: take representative samples per ISO 15528.
• Procedure highlights:
  • Clean dishes with toluene then acetone, dry solvent‑free, then condition in convection oven at ~160 °C for ≥24 h.
  • Use three dried dishes per sample (triplicate).
  • Weigh a 2.000 g (2 g) test portion into a pre‑weighed dish.
  • Heat in non‑convection oven at 135 °C for at least 45 minutes until constant/stabilized weight.
  • Cool and weigh; calculate NV from mass of residue relative to test portion.
• Calculation & reporting: NV (%) = (mass of residue / mass of test portion) × 100. Report the mean of three valid results to one decimal place. Include product ID, reference to ISO 16482‑1, test date and any deviations in the report.

Applications and users

• Quality control in paint, varnish and adhesive manufacturing to verify binder solids.
• Incoming inspection of aqueous rosin‑resin dispersions for raw material acceptance.
• R&D and formulation labs assessing resin concentration and batch consistency.
• Independent testing laboratories performing standardized comparisons or certification.
• Useful for regulatory compliance, specification checks, and supplier audits where accurate non‑volatile matter (solid content) is required.

Related standards

• ISO 16482‑2 - Determination of NV by the microwave method (complements Part 1).
• ISO 4625‑1 - Softening point determination (ring‑and‑ball method); defines applicability range.
• ISO 15528 - Sampling of paints, varnishes and raw materials.

ISO 16482-1:2013 provides a clear, repeatable oven method for measuring NV in aqueous rosin‑resin dispersions-essential for reliable binder quality assessment and process control in coatings and related industries.