Step 1. Remove detector tube from sealed pouch. Step 2. Hold middle of detector in hands and squeeze to break the inner glass tube. do not crush or bend. Step 3. While holding middle of tube in a horizontal direction, blow hard into mouthpiece for 12 seconds. Step 4. Shake the detector tube slightly to distribute crystals evenly within the test window. Step 5. Results may be read after 2 minutes. Note: Reading results after 5 minutes may show false result. |