New Standard from Last Update.

1. SCOPE

1.1 This standard (Part 3) covers X-ray gravitational technique for the determination of the particle size distribution of a powder dispersed in a liquid using gravity sedimentation. The measurement of the concentration of solids settling in a liquid suspension is achieved by monitoring the incremental signal absorption from a beam of X-rays.

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 typical particle size range for analysis is from about 0.5 µm to about 100 µm. The method is used for materials containing particles of the same chemical composition which produce adequate X-ray opacity.

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 edition 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 the standard:

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

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

IS 8883 Methods of sampling chemical and chemical product:

(Part 1) : 2005 General requirements and precautions (first revision)

(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