(c) all tables and shelves on which instruments are laid are constructed of or covered with glass, marble, glazed tiles or other similar smooth, impervious, durable and non-corroding material;
(c) zonke iita le neeshelufa ekubekwe kuzo izixhobo zokusebenza zenziwe ngeglasi okanye zigqunywe ngeglasi, zenziwe ngelitye elibubhastile, iithayile ezimenyezelayo okanye ngematiriyeli egudileyo engenakungenwa nto kwaye engadlekiyo;