New Standard from Last Update.

1. SCOPE

1.1 This standard (Part 2) covers fixed pipette method for determining the particle size distributions of particulate materials, typically in the size range 1 µm to 100 µm, by gravitational sedimentation in a liquid.

1.2 The methods of determining the particle size distribution described in this standard are applicable to powders which can be dispersed in liquids or powders which are present in slurry form. The method is applicable to powders made up of particles having the same density and of comparable shape. Particles should not undergo any chemical or physical change in the suspension liquid. It is necessary that the particles have a density higher than that of the liquid.

2. REFERENCES

The standards given below contain provisions, which through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of these standard:

IS 4124 : 1981 Glossary of terms relating to powders (first revision)

IS 5282 (Part 1) Determination of particle size distribution by gravitational liquid sedimentation methods: Part 1 General principles and guidelines (first revision) : 2023

IS 8883 Methods of sampling chemical and chemical product (first revision):

(Part 1) : 2005 General requirements and precautions

(Part 2) Sampling equipment,

(Sec 1) : 1978 For solids

(Sec 2) : 1978 For liquids

(Sec 3) : 1978 For gases

IS 18100 : 2022 Sample preparation - Dispersing procedures for powders in liquids