Vranky 5Pcs10ml 5ml 3ml 2ml 1ml with 2 Brushes Thick Glass Graduated Pipette Dropper Liquid with Rubber Cap Essential Oil Transfer

The rubber glass pipette is environmental friendly and non-toxic. It is also reusable after clean up, and better than plastic pipette. Apply for testing laboratories, chemistry, microbiology, liquids, scents and more. Instructions?When adding the product, the dropper is just above the vertical.After drawing the liquid, the tip can not touch other objects, so as to avoid contamination of impurities. When used, do not only use the thumb and index finger pinching, with the middle finger and ring finger together. Package Included: 1 x 10ml Glass Dropper; 1 x 5ml Glass Dropper; 1 x 3ml Glass Dropper; 1 x 2ml Glass Dropper; 1 x 1ml Glass Dropper.2 x Brushes