4Pcs Glass Graduated Dropper Pipette for Liquid Essential Oil, 10ml Lab Dropper Pipettes Transfer with Rubber Cap and 2Pcs Cleaning Brush

Hyber&Cara Glass Pipettes 10ml Glass Dropper Features: 1.Eye drooper is made of borosilicate glass, is thick and durable 2.Liquids dropper graduation is very precise, clear and professional, the calibration marks are easily readable. 3.The glass pipette dropper is environmental friendly and non- toxicIt is also reusable after clean up,and better than plastic pipette. 4.Uses: Apply for testing laboratories, chemistry, microbiology, liquids, scents and more Specifications Overall Length ( with blue rubber bulb ): 24.5CM Pipette Length: 20CM Outer Diameter: 1.3CM Capacity: 10mL Minimum Scale: 0.2mL Specifications Overall Length ( with blue rubber bulb ): 24.5CM Pipette Length: 20CM Outer Diameter: 1.3CM Capacity: 10mL Minimum Scale: 0.2mL Material: Glass Use Tips 1.It should be washed with chromic acid wash to remove oil of the inside wall. 2.Then the remaining lotion is washed with water, and washed with distilled water again. 3.After washing, the pipet wall should not have water droplets. 4.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 includes: 4 x 10mL Glass Graduated Pipette 2 x Nylon Cleaning Brush.