(1) Waste-closet bowls and associated traps, if made of ceramic material, shall comply with S.A.B.S 497, Glazed ceramic sanitaryware.

(2) Any pad inserted between the base of the bowl and the floor shall be of non-absorbent material.

(3) Non-absorbent seat rims or hinge seats shall be fitted to such bowls except in case of squat pans.