For organic reactions involving viscous materials. Covers are of heavy pressed construction. Lower sections are mold-blown for maximum resistance to mechanical breakage. No. 46180-01 and 46180-02 have interchangeable covers with four openings to accommodate 24/40 ground joints. No. 46180-03, 46180-04 and 46180-05 have interchangeable covers with openings for three 24/40 ground joints and one 34/45 ground joint. (C6947)
