BS 748:1982

Отменен

Specification for haemacytometer and particle counting chambers — 14 стр.

На этот документ ссылаются

BS 6920-2.5:2000

Действует

Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of water. Methods of test — 14 стр.