These essential oil test strips are perfect for testing oil scents. You can use them to make your own blends or to get accurate smell of your other oils. Just dip the end of the strip into the oil (or put 2-3 drops ) and let it sit for a few seconds. You then hold the strip from the nose and take a short . Features - Color: White. - Material: Paper. - Size: 15.00X0.70X0.50cm/5.89X0.28X0.20in - Note: The size error of this product is about 0.3cm. - Made with paper with soy ink printed. and safe to use. - Great absorption capacity of water and oil. - Easy and convenient to test, just the perfume on the test strips. - Designed to test aromatherapy oil, perfume, essential oil and so on. - A set of 200pcs perfume test strips, sufficient quantity for your needs. Package list: 200 x perfume test strips