301 Flasks Volumetric (Measuring) "PSAW" With interchangeable Glass stopper, accuracy as per Class "A" of I.S. 915 : 1975 with Works Certificate 301/01 Capacity 1 ml., Tolerance 0.10 ± ml., Stopper Size 10/15 301/02 Capacity 2 ml., Tolerance 0.15 ± ml., Stopper Size 10/15 301/03 Capacity 5 ml., Tolerance 0.05 ± ml., Stopper Size 10/15 301/04 Capacity 10 ml., Tolerance 0.05 ± ml., Stopper Size 10/15 301/05 Capacity 20 ml., Tolerance 0.08 ± ml., Stopper Size 10/15 301/06 Capacity 25 ml., Tolerance 0.08 ± ml., Stopper Size 10/15 301/07 Capacity 50 ml., Tolerance 0.12 ± ml., Stopper Size 10/15 301/08 Capacity 100 ml., Tolerance 0.20 ± ml., Stopper Size 14/15 301/09 Capacity 200 ml., Tolerance 0.30 ± ml., Stopper Size 14/15 301/10 Capacity 250 ml., Tolerance 0.30 ± ml., Stopper Size 14/15 301/11 Capacity 500 ml., Tolerance 0.50 ± ml., Stopper Size 19/20 301/12 Capacity 1000 ml., Tolerance 0.400 ± ml., Stopper Size 19/20 301/13 Capacity 2000 ml., Tolerance 0.600 ± ml., Stopper Size 24/25 ( 1 ml. and 2 ml. As per Flasks are of Test Tube Shape)