Copper, lead, zinc and nickel concentrates. Experimental methods for checking the bias of sampling Ingestion-build-135476 it draws on some content

it draws on some content in BS 8904:2011 Guidance for community sustainable development

Dough dividers working in other ways are excluded from the scope of this European Standard

Analog audio recording began with mechanical systems such as the phonautograph and phonograph

suppliers or distributors developing a quality system

Systems having fully pre-mixed gas and air burners in which either the gas and all the combustion air are brought together just before the level of the combustion zone

Copper, lead, zinc and nickel concentrates. Experimental methods for checking the bias of sampling Ingestion-build-135476 it draws on some content1 Scope This International Standard specifies methods for checking whether there is any bias in the sampling of copper, lead, zinc and nickel concentrates, where the sampling is carried out in accordance with the methods specified in ISO 12743. These methods can also be used for comparing alternative sampling regimes, checking whether there is any bias in sample processing and for checking possible significant differences in sampling at different