These essential oil strips are perfect for testing oil scents. You can use them to make your own blends or to get a more accurate smell of your other oils. Just dip the end of the strip into the essential oil (or put 2-3 drops on it) and let it sit for a few seconds. You can then hold the test strip up to your nose and take a sniff. Features -Color: White. -Material: Paper. -Size: 15.00X0.70X0.50 cm/5.89X0.28X0.20 inches. - paper strips: Designed for testing aromatherapy oils, perfumes, essential oils, and more. - quality: paper strips produced by special technology, no deformation, no delamination. -Convenient design: The narrow long rectangle shape design of the paper strips is easy to hold. -Easy to use: Just spray the on the test paper, or use the test paper to dip in aromatherapy and essential oils. -Preservation method: paper strips should be stored in a fireproof, dry, and cool place. Package list: 3000 x paper strips