Description 10mL Glass Dropper Graduated Pipette with Rubber Bulb Specifications Overall Length ( with blue rubber bulb ): 36.5CM Pipette Length: 33CM Outer Diameter: 1CM Capacity: 10mL Minimum Scale: 0.1mL Material: Glass Use Tips It should be wash with chromic acid wash to remove oil of the inside wall. Then the remaining lotion is washed with water, and washed with distilled water again. After washing, the pipet wall should not have water droplets. Before remove the liquor, should be blot up inside and outside the pipette tip with filter paper, and then use the liquor rinsed pipe wall 2 to 3 times, in order to ensure that the concentration of the liquor are the same. Package included 1 x 10mL Glass Graduated Pipette4322