Products used for treatment of water intended for human consumption. Pumice Ingestion-build-107062 the graphite materials in pencils

the graphite materials in pencils and liquid ink in pens)

These blocks are covered by EN 15037-4

This information is found in the online database on the ISOBUS website (http://www

BS 3878 also provides recommended scheme for the selection of test pieces

Products used for treatment of water intended for human consumption. Pumice Ingestion-build-107062 the graphite materials in pencils1 Scope This European Standard is applicable to pumice used for treatment of water intended for human consumption. It describes the characteristics of pumice and specifies the requirements and the corresponding test methods for pumice. It gives information on its use in water treatment.