Writing and marking instruments - Specification for end closures to reduce the risk of asphyxiation Ingestion-build-64721 5 Duplicated drive systems

5 Duplicated drive systems

Manufacturers of ceramic tiles

are continuously being developed which means that new systems for Factory Production Control will be introduced and implemented

NOTE Method B originates from Finnish experience and is suitable also when polymer modified bitumen is used

The LC-MS technique is limited to the determination of of BBP

Writing and marking instruments - Specification for end closures to reduce the risk of asphyxiation Ingestion-build-64721 5 Duplicated drive systems1 Scope This part of BS 7272 specifies requirements to reduce the risk of asphyxiation from end closures for writing and marking instruments. It relates to such instruments which in normal or foreseeable circumstances are likely to be used by children up to the age of 14 years. This part of BS 7272 is not applicable to the following: writing and marking instruments which are designed or only intended for use by adults, e. g. jewellery pens, expensive