ISO 8130-16:2022

Coating powders - Part 16: Determination of density by liquid displacement in a measuring cylinder

This document specifies a method for determining the density of coating powders by liquid displacement in a measuring cylinder. The method is based on a determination of the mass and the volume of a test portion. It can be used for all types of coating powders. NOTE If the powder does not swell in contact with the displacement liquid used and if the displacement liquid replaces the air between the powder particles, it can then be used and compared with the method described in ISO 8130-3.

Poudres pour revêtement — Partie 16: Détermination de la masse volumique par déplacement d’un liquide dans une éprouvette graduée

Le présent document spécifie une méthode de détermination de la masse volumique de poudres pour revêtement, par déplacement d’un liquide dans une éprouvette graduée. Cette méthode repose sur la détermination de la masse et du volume d’une prise d’essai. Elle peut être utilisée pour tous les types de poudres pour revêtement. NOTE Si la poudre ne gonfle pas au contact du liquide auxiliaire utilisé et si ce liquide remplace l’air qui se trouve entre les particules de poudre, la méthode peut être utilisée et comparée à celle décrite dans l’ISO 8130-3.

General Information

• Status: Published
• Publication Date: 30-Sep-2022
• ICS: 87.040 - Paints and varnishes
• Technical Committee: ISO/TC 35/SC 9 - General test methods for paints and varnishes
• Drafting Committee: ISO/TC 35/SC 9/WG 16 - Coating powders
• Current Stage: 6060 - International Standard published
• Start Date: 01-Oct-2022
• Due Date: 29-Jun-2024
• Completion Date: 01-Oct-2022

Overview

ISO 8130-16:2022 specifies a standard laboratory method for determining the density of coating powders by liquid displacement in a measuring cylinder. The method measures the mass and the volume displaced by a known portion of powder using a non‑reactive displacement liquid. It is applicable to all types of coating powders when the chosen liquid wets but does not swell or dissolve the powder.

Key topics and requirements

• Principle: Density is calculated from the mass increase when powder displaces a known liquid volume in a measuring cylinder.
• Displacement liquid: A suitable aliphatic hydrocarbon (free from aromatic compounds) with boiling point 80–140 °C; must not interact with the powder.
• Apparatus:
  • 25 ml graduated measuring cylinder (ISO 4788)
  • Glass funnel, pipette
  • Balance: 100 g capacity, readability 1 mg or better
• Test conditions:
  • Perform duplicate determinations at (23.0 ± 1.0) °C (relative humidity (50 ± 5)% where applicable)
  • Condition apparatus, liquid and sample to test temperature
• Procedure (summary):
  • Fill cylinder to 20 ml with displacement liquid and weigh (m1)
  • Add powder so liquid level reaches 25 ml and weigh (m2)
  • Calculate density ρ (g/cm3) using ρ = (m2 − m1) / 5 (volume displaced = 5 cm3)
  • If the two determinations differ by more than 0.05 g/cm3, repeat
  • Report mean to nearest 0.01 g/cm3
• Reporting: Include product identification, reference to ISO 8130-16:2022, cylinder type, displacement liquid, individual values and mean, deviations, anomalies and test date.
• Precision: No inter‑laboratory precision data are provided in the standard.

Applications and users

This standard is practical for:

• Quality control laboratories in powder coating and paint manufacturing
• R&D teams evaluating powder formulations and bulk properties
• Third‑party test laboratories and certification bodies
• Procurement/specification teams requiring comparable density data for process control, dosing, and cost calculations

Density data from ISO 8130-16 supports process parameters (spray gun settings, material handling), comparisons between batches, and formulation adjustments.

Related standards

• ISO 4788 - Laboratory glassware: graduated measuring cylinders (referenced for cylinder requirements)
• ISO 8130-3 - Density by liquid displacement pycnometer (alternative method for comparison)
• ISO 8130-14 - Vocabulary for coating powders
• ISO 15528 - Sampling of paints, varnishes and raw materials

Keywords: ISO 8130-16:2022, coating powders density, liquid displacement in measuring cylinder, displacement liquid, aliphatic hydrocarbon, powder coating test method, density determination.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 8130-16
First edition
2022-10
Coating powders —
Part 16:
Determination of density by liquid
displacement in a measuring cylinder
Reference number
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
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Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Materials . 1
6 Apparatus . 2
7 Sampling . 2
8 Procedure .2
8.1 Number of determinations and test temperature. 2
8.2 Determination of the density of the displacement liquid . 2
9 Expression of results . 2
10 Precision . 3
11 Test report . 3
Bibliography . 4
iii
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