The eXact Micro 8 Advanced Photometer uses a patented method and technologies that offer faster, safer, easier, and more precise water testing. It offers ten modes which provide direct read capabilities for nine direct reads: cyanide, total iron, ferrous iron, ammonia, phosphate, BT-pH, sulfide – which allows for testing of an additional 12 parameters. That’s 19 parameters in all! Features: USEPA compliant meter for free and total chlorine Over 7 direct read parameters: cyanide, total iron, ferrous iron, ammonia, phosphate, BT-pH, sulfide The ITS eXact Micro 8 Advanced Photometer System Kit proprietary optics allow for accurate testing with out cap With built-in, permanent sample cell, simply fill or dip meter into water. No color matching necessary to diagnose test results 140 test memory (saves last 20 tests per menu) Automatic countdown timer Easy-to-read LCD display Waterproof meter floats No-slip grip housing Environmentally friendly - uses 60% less chemicals than competitor's products CE certification eXact Micro 8 Advanced Photometer System Kit Statistics Measurement method: Photometric Programmed tests: Detection range Cyanide: 0.00-1.90 ppm Total iron: 0.00-7.5 ppm Iron ferrous: 0.00-7.5 ppm Ammonia: 0.00-2.00 ppm Phosphate: 0.00-4.0 ppm BT-pH: 5.0-10.0 ppm Sulfide: 0.01-0.70 ppm Transmission mode tests: total alkalinity, aluminum, biguanide, calcium, chloride, cyanuric acid, magnesium, CG-pH, potassium, protein, sulfate, turbidity Government compliance: European CE Mark and USEPA Compliance for Free/Total Chlorine Sample required: 4 mL (0.13 oz) Operating temperature range: 0 - 50°C (32 - 122°F) Waterproof rating: Exceeds IP67 Instrument dimensions: (2" x 1.4" x 6.375") Instrument weight: 5 oz (6 oz with batteries installed) Batteries: not included; uses (4) AAA alkaline batteries Note: To ensure optimal performance, store your eXact kit in a cool, dry place away from excess heat (below 100°F/38°C), moisture, and oxidizers such as chlorine and bromine.