Ionizing-radiation warning. Supplementary symbol Ingestion-build-156411 with the following British Standards:

with the following British Standards: BS 4737-4

— either on test specimens conditioned in reference atmospheres

in an attempt to achieve optimum protection effectiveness

and four-wave mixing (FWM)

Ionizing-radiation warning. Supplementary symbol Ingestion-build-156411 with the following British Standards:1 Scope This International Standard specifies the symbol to warn of the presence of a dangerous level of ionizing radiation from a high level sealed radioactive source that can cause death or serious injury if handled carelessly. This symbol is not intended to replace the basic ionizing radiation symbol [ISO 361, ISO 7010: 2003, Table 1 (Reference number W003)], but to supplement it by providing further information on the danger associated with the