The scent smelling paper strip is the best tool to smell the perfume, analyze odor quality and know the ingredients of the mixed scents. Available in packs of 50pcs, also available in boxes of 9000pcs. Dripping the testing paper and wait scent smelling paper strip to dry, then hold it close to the nose for less than 5cm and inhale the fragrance for 30 seconds. Do not store closely to flavoring and aromatic materials, as the scent smelling paper strip will absorb odor molecules. Best keeping in tightly closed bag and keeping away from essential oils.