Borosil Erlenmeyer Conical Flask with Long Neck without Rim (4981)4981 Borosil Erlenmeyer Conical Flask with Long Neck without Rim Uniform wall thickness distribution makes these Flasks ideal for heating Ideal for culture work A long neck designed for cotton plugs and metal caps The conical form makes them suitable for mixing liquids The easy to read scale and large labeling field facilitate easy marking Product Code Capacity ml Approx. O. D. x Height mm Approx. Neck O. D. mm Quantity Per Case 4981021 250 78 x 154