GB/T 47069.1-2026 Active National standards

GB/T 47069.1-2026 Determination of particle density—Sedimentation methods—Part 1:Isopycnic interpolation approach

Publish Date: 2026-01-28 Implement Date: 2026-08-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 47069.1-2026

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Screening, sieve plates, and sieve nets

ICS Name: Granularity analysis and sieving

Publish Date: 2026-01-28

Implement Date: 2026-08-01

Pages: 32 pages

Scope

This document specifies a method for determining the density of solid particles or droplets (hereinafter collectively referred to as "particles") dispersed in a liquid. This method is based on Archimedes' principle, which states that the buoyancy of a particle completely immersed in a liquid is equal to the weight of the fluid displaced by the particle. If the weight of the particle is equal to its buoyancy, the particle will stop settling or floating due to gravity or centrifugal force and remain in suspension. Under these conditions, the density of the particle is equal to the density of the liquid. This document determines the density of the particles by analyzing the migration speed and direction of the particles dispersed in liquids with densities lower than and higher than the density of the particles. All particles have the same material composition.