supply of laboratory glass wares items , measuring cylinder capacity 10 ml class a with individual certificate of performance is 878:2008 made from heat resistant low expansion 3.3 b orosilicate glass. tolerance +/-0.1 ml with isi mark [ warranty period: 30 months after the date of delivery ] ] , measuring cylinder capacity 100ml class a with individual certificate of performance is 878:2008 made from heat resistant low expansion 3.3 b orosilicate glass. tolerance +/-0.05 ml with isi mark. [ warranty period: 30 months after the date of delivery ] ] , petri dishes top and bottom 100 x 17 mm reusable and sterilizable. autoclavable at 120 degree celsius tight fitting lid. made from heat resista nt low expansion 3.3 borosilicate [ warranty period: 30 months after the date of delivery ] ] , graduated test tube with ic joint & stopper 20 ml [ warranty period: 30 months after the date of delivery ] ] , graduated pippette with pippette bulb capacity 5 ml borosilicate tubular glass [ warranty period: 30 months after the date of delivery ] ] , graduated pippette with pippette bulb capacity 25 ml borosilicate tubular glass [ warranty period: 30 months after the date of delivery ] ] , conical flsk 1000 ml narrow mouth with graduation made from heat resistant low expansion 3.3 borosilicate glass [ warranty period: 30 mont hs after the date of delivery ] ] , l shaped glass spreader 6 x 150 mm made of 3.3 borosilicate glass autoclavable at 121 degree celcious [ warranty period: 30 months after t he date of delivery ] ] , beaker 250 ml with graduation and spout made from heat resistant low expansion 3.3 borosilicate glass. with isi mark. [ warranty period: 30 months after the date of delivery ] ] , beaker 50 ml with graduation and spout made from heat resistant low expansion 3.3 borosilicate glass. with isi mark. [ warranty period: 30 months after the date of delivery ] ] , beaker 100 ml with graduation and spout made from heat resistant low expansion 3.3 borosilicate glass. with isi mark. [ warranty period: 30 months after the date of delivery ] ] , beaker 1000 ml with graduation and spout. made from heat resistant low expansion 3.3 borosilicate glass. with isi mark. [ warranty period: 30 months after the date of delivery ] ] , beaker 500 ml with graduation and spout made from heat resistant low expansion 3.3 borosilicate glass. with isi mark. [ warranty period: 30 months after the date of delivery ] ] , conical flsk 250 ml narrow mouth with graduation made from heat resistant low expansion 3.3 borosilicate glass [ warranty period: 30 month s after the date of delivery ] ] , measuring cylinder capacity 1000ml class a with individual certificate of performance is 878:2008 made from heat resistant low expansion 3.3 borosilicate glass. tolerance +/-5.0 ml with isi mark [ warranty period: 30 months after the date of delivery ] ] , measuring cylinder capacity 500 ml class a with individual certificate of performance is 878:2008 made from heat resistant low expansion 3.3 borosilicate glass. tolerance +/-2.50 ml with isi mark [ warranty period: 30 months after the date of delivery ] ]