Usage Tips:These essential oil test 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 oil (or put 2-3 drops on it) and let it sit for a few seconds. You then hold the strip from the nose and take a short whiff. Features-Color: White.-Material: Paper.-Size: Approx. 11.50X1.50X0.10cm/4.52X0.59X0.04in.-Superior quality: Tester paper strips produced by special technology, no deformation, no delamination.-Tester paper strips: Designed for testing aromatherapy oils, perfumes, essential oils and more.-Convenient design: The round shape design at one end of the Tester Paper Strips is easy to hold.-Easy to use: Just spray the perfume on the test paper, or use the test paper to dip in aromatherapy and essential oils.-Preservation method: Tester paper strips should be stored in a fireproof, dry and cool place.Packing list: 200 x Tester paper strips