Section 21

to ensure, so far as is practicable, that the substance is safe and without risks to health when properly used;

to carry out or arrange for the carrying out of such testing and examination as may be necessary for the performance of the duty imposed on him by paragraph (a);

to take such steps as are necessary to ensure that there will be available in connection with the use of the substance at work adequate information about the results of any relevant test which has been carried out on or in connection with the substance and about any condition necessary to ensure that it will be safe and without risks to health when properly used; and

to take such steps as are necessary to secure, so far as is practicable, that the persons supplied with the substance are provided with all such revisions of information provided to

Occupational Safety and Health 31

them under paragraph (c) as are necessary by reason of it becoming known that there is a new risk that could give rise to a serious risk to safety or health.

It shall be the duty of a person who undertakes the formulation or manufacture of any substance for use at work to carry out or arrange for the carrying out of any necessary research with a view to the discovery and, so far as is practicable, the elimination or minimization of any risk to safety or health to which the substance may give rise.

Explanations to sections 20 and 21