ISO 8130-3:2021 PDF

Coating powders — Part 3: Determination of density by liquid displacement pycnometer

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Title (English):

ISO 8130-3:2021

Coating powders — Part 3: Determination of density by liquid displacement pycnometer

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 4
Publication date:: June 23, 2021
Edition:: ISO IS 8130 edition 2 version 1
ICS:: 87.040

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Description (English):

This document specifies a liquid displacement pycnometer method for the determination of the density of coating powders. The method is based on a determination of the mass and the volume of a test portion. Coating powders with density 3, can be measured in accordance with ISO 1183-1 and the appropriate method, by agreement.

Technical details

Technical committee: ISO/TC 35/SC 9 - General test methods for paints and varnishes
SKU: ISO 8130-3:2021

Abstract

Overview

ISO 8130-3:2021 - "Coating powders - Part 3: Determination of density by liquid displacement pycnometer" - specifies a laboratory method to determine the density of coating powders using a liquid-displacement pycnometer. The method measures the mass and volume of a test portion wetted by a selected displacement liquid that does not swell or dissolve the powder. Results are calculated and reported at (23 ± 1) °C.

Key topics and technical requirements

Method principle: Density determined by liquid displacement in a pycnometer (mass and displaced volume).
Apparatus and materials:
- Pycnometer complying with ISO 2811-1.
- Vacuum pump (for bubble removal).
- Balance (200 g capacity, 1 mg readability).
- Displacement liquid: aliphatic hydrocarbon(s) free of aromatics, boiling point 80 °C–140 °C; must not interact with sample.
- Water (ISO 3696 grade 3), freshly boiled and cooled (used for calibration and when appropriate).
Conditions and sampling:
- Test temperature: (23 ± 1) °C; relative humidity: (50 ± 5) %.
- Sampling per ISO 15528 to obtain representative test portions.
Procedure essentials:
- Duplicate determinations required.
- Determine density of displacement liquid by pycnometer filled with liquid and with water (water density at 23 °C taken as 0.998 g/cm3).
- Introduce powder wetted by displacement liquid, remove entrapped air (vacuum if needed), fill to mark and weigh.
- If duplicate results differ by > 2 %, repeat tests.
- Report mean value to nearest 0.01 g/cm3.
Reporting: Include sample ID, reference to ISO 8130-3:2021, pycnometer type/volume, displacement liquid type/grade, sample mass, individual and mean results, deviations from the method and anomalies, and test date.
Notes: The 2021 edition updated references (ISO 2811-1), removed acetone for cleaning, changed filling order, and set the acceptable inter-result difference as a percentage. No precision data are provided in the standard.

Applications and users

Who uses it:
- Coatings manufacturers and quality control laboratories.
- R&D teams developing powder coatings and formulators assessing raw materials.
- Test labs performing conformity checks and suppliers verifying product specifications.
Practical uses:
- Verifying batch-to-batch consistency of powder coating density.
- Calculating coverage, formulation control and material properties where density is a key parameter.
- Supporting product datasheets and regulatory or contractual quality requirements.

Related standards

ISO 2811-1 - Pycnometer method for paints and varnishes (pycnometer specification).
ISO 1183-1 - Density methods for plastics (used for powders with density

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and technical requirements

Method principle: Density determined by liquid displacement in a pycnometer (mass and displaced volume).
Apparatus and materials:
- Pycnometer complying with ISO 2811-1.
- Vacuum pump (for bubble removal).
- Balance (200 g capacity, 1 mg readability).
- Displacement liquid: aliphatic hydrocarbon(s) free of aromatics, boiling point 80 °C–140 °C; must not interact with sample.
- Water (ISO 3696 grade 3), freshly boiled and cooled (used for calibration and when appropriate).
Conditions and sampling:
- Test temperature: (23 ± 1) °C; relative humidity: (50 ± 5) %.
- Sampling per ISO 15528 to obtain representative test portions.
Procedure essentials:
- Duplicate determinations required.
- Determine density of displacement liquid by pycnometer filled with liquid and with water (water density at 23 °C taken as 0.998 g/cm3).
- Introduce powder wetted by displacement liquid, remove entrapped air (vacuum if needed), fill to mark and weigh.
- If duplicate results differ by > 2 %, repeat tests.
- Report mean value to nearest 0.01 g/cm3.
Reporting: Include sample ID, reference to ISO 8130-3:2021, pycnometer type/volume, displacement liquid type/grade, sample mass, individual and mean results, deviations from the method and anomalies, and test date.
Notes: The 2021 edition updated references (ISO 2811-1), removed acetone for cleaning, changed filling order, and set the acceptable inter-result difference as a percentage. No precision data are provided in the standard.

Applications and users

Who uses it:
- Coatings manufacturers and quality control laboratories.
- R&D teams developing powder coatings and formulators assessing raw materials.
- Test labs performing conformity checks and suppliers verifying product specifications.
Practical uses:
- Verifying batch-to-batch consistency of powder coating density.
- Calculating coverage, formulation control and material properties where density is a key parameter.
- Supporting product datasheets and regulatory or contractual quality requirements.

Related standards

ISO 2811-1 - Pycnometer method for paints and varnishes (pycnometer specification).
ISO 1183-1 - Density methods for plastics (used for powders with density

ISO 8130-3:2021 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Related standards

Paints and varnishes - Determination of density - Part 1: Pycnometer method (ISO 2811-1:2023)

Water for analytical laboratory use. Specification and test methods.

Paints, varnishes and raw materials for paints and varnishes - Sampling (ISO 15528:2020)

Plastics - Methods for determining the density of non-cellular plastics - Part 1: Immersion method, liquid py…