SHAMROCK TECHNOLOGIES › HYDROCER™ 303 HYDROCER™ 303 $0.00 SHAMROCK HYDROCER™ 303 is a 35% aqueous dispersion of a special blend of polyethylene waxes. Add To Cart Added! SHAMROCK HYDROCER™ 303 is a 35% aqueous dispersion of a special blend of polyethylene waxes. You Might Also Like HYDROCER™ AE 35 FG HYDROCER™ AE 30BC HYDROCER™ 8481 HYDROCER™ AE PW HYDROCER™ EC 35 470