Features: Made of imported paper with soy ink printing. Environmentally friendly and safe to use. Strong water and oil absorption capacity. Simple and convenient to test. Designed for testing aromatherapy oil, perfume, essential oils and so on. 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 scent of 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. Then hold the strip to your nose and take a short breath. Specification: Color: Shown in the pictures. Material: Paper. Size: As shown (L*W, 1in=2.54cm) Package: 100pcs * Essential Oil Test Strips Notes: 1. Due to different displays and lighting effects, the actual color of the product may be slightly different from the color shown in the picture. 2. Please understand that manual measurement will cause a measurement deviation of 1mm/0.39 \"-3mm/1.18 \".