IS 5257-1969
Eyepiece and screen specifications for powder particle size determination

Standard No.

IS 5257-1969

Release Date

1969

Published By

IN-BIS

Status

Be replaced

Replace By

ISO/FDIS 5257:2023

Latest

ISO/FDIS 5257:2023

Scope

This standard specifies requirements for the design and construction of eyepiece and screen graticules used in optical microscope employed for determining the particle size of powders ( see IS : 5258-1969* ).

IS 5257-1969 history

• 2023 ISO/FDIS 5257:2023 Bamboo Structures – Engineered bamboo products – Test methods for determination of mechanical properties using small size specimens
• 1969 IS 5257-1969 Eyepiece and screen specifications for powder particle size determination