This essential oil test strips blotters are made of paper with soy ink printed with great absorption capacity of water and oil. Each blotters includes 40 individual testing strips. They are designed to test the smell of a variety of perfumes, aromatherapy oil, perfume, essential oil and so on. You can also use them to make your own blends or to get more accurate smell of your other oils. Just dip the end of the trip into the oil or put 2-3 drops on it, and let it sit for a few seconds. Then take a short whiff whole holding the strip from the nose. They are perfect for the perfume stores, mall, home, counter, cosmetics store, and laboratories. Have your logo or design imprinted on the surface of the strips to create a unique giveaway for brand exposure!