API Master Freshwater Test Kit Long Expiry This kit tests tap water and aquarium water for five different parameters that affect the health of freshwater fish: pH High Range pH Ammonia Nitrite Nitrate Highly accurate and economical. Unique, transparent dome allows clear view of contents. Includes all tests required to test the nitrogen cycle. Kit includes computer-calibrated and laminated colour cards, 4 plastic test tubes and holding tray. Also contains complete, step-by-step instruction booklet, including information on how to correct unsafe water conditions. Compact and easy to store. Over 800 tests. Kit contains: 7 Bottles of solutions 4 plastic test tubes with snap-tight cap Holding tray Step-by-step instructions Information on correcting an unsafe environment Laminated computer calibrated colour chart