Section 34: Evidence by certificate.

Where in any proceedings for an offence under this Act, a question arises as to whether anything or substance is a weapon, a hazardous, radioactive or a harmful substance, a toxic chemical or microbial or other biological agent or toxin, a certificate purporting to be signed by an appropriate authority to the effect that the thing or substance described in the certificate is a weapon, hazardous, radioactive or harmful substance, a toxic chemical or other biological agent or toxic, shall be admissible in evidence.