EN ISO 787-10:1995 PDF
General methods of test for pigments and extenders - Part 10: Determination of density - Pycnometer method (ISO 787-10:1993)
General methods of test for pigments and extenders - Part 10: Determination of density - Pycnometer method (ISO 787-10:1993)
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 7
- Дата публикации:
- 23 августа 1995 г.
- Издание:
- CEN EN 787 edition 1 version 1
- ICS:
- 87.060.10
Describes common sampling method, expression of results and test report for two methods of density determination using a pyknometer (method A and B) as well as their apparatus and procedure in detail.
Abstract
Overview
EN ISO 787-10:1995 defines standardized pycnometer methods for determining the density of pigments and extenders. The part describes two pycnometer-based procedures (Method A and Method B), common sampling and result expression, plus required apparatus and step-by-step procedure. The standard supports reliable, reproducible density data for quality control, formulation and material specification.
Key Topics
- Scope and purpose: Density determination of pigment and extender samples using a pycnometer; includes sampling, drying and reporting requirements.
- Methods A and B: Both methods use the same general principle but differ in apparatus and handling. Method B is noted as more convenient for lower-density pigments.
- Displacement liquid: Select a liquid in which the material is insoluble, with good wetting and low evaporation (high-boiling aliphatic hydrocarbon or water with wetting agent are typical). Special care is required for carbon black.
- Sampling and sample preparation: Take a representative sample per ISO 842. Sieve and dry samples (the standard gives drying at 105 ± 2 °C for 2 h where applicable) and cool in a desiccator before testing.
- Apparatus: Typical equipment includes a 25 ml or 50 ml Gay-Lussac type pycnometer, vacuum apparatus (capable of
Технические детали
- Технический комитет
- CEN/TC 298 - Pigments and extenders
- SKU
- EN ISO 787-10:1995
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