These pipettes are very easy to use for tiny applications of liquid. You don't need to spend tons of time washing them out. They not cause contamination when you need to mix several fragrances or essential oils at one time. Each dropper can hold 3ml liquid. The outer wall of the our fer pipette is engraved with a scale, which can be absorbed in an appropriate amount liquid you need. Soft head of the droppers provide good suction to retain fluids. Wide range of applications for extracting essential oils, mixing fragrance, and homemade beauty products, watercolor painting, science experiments, industrial uses, feeding the baby animals, etc. Application scenarios - scientific experiments, modeling, making watercolor paintings, etc. Calibration Dial - Graduation is engraved on the outer wall of the straw for the right amount of absorption. EASY TO USE - These pipettes are soft, flexible and easy to use, which can time mixing perfumes without -contamination. PACKAGING AND COLORS - 1000pcs plastic pipettes for 3ml liquid, convenient and easy to use. Safe and Reliable - Made of high-quality food-grade plastic, non- and harmless, you can buy with confidence. Capacity: 3ml size: 15.5cm Material: Plastic colour: parent Package Contents: 1000 x straws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.