Description Hanna Pocket Checker-KH/Alkalinity The Hanna HI-775 Alkalinity Checker for fresh water is a simple, accurate and cost effective way to measure alkalinity in fresh water. The HI-775 is ideal for checking water quality, great for educational and environmental applications and for use in freshwater aquaria. Designed as a more accurate alternative to chemical test kits, the HI-775 provides quick, accurate results in four easy steps. The HI-775 uses a colorimetric method. The reaction causes a distinctive range of colours from yellow to blue to develop. This meter has been developed to work with fresh water samples. Features: 0 to 500 ppm Ideal for freshwater aquariums Alkalinity Technical Data: Range 0 to 500 ppm Resolution 1 ppm Accuracy (@25°C/77°F) ±5 ppm ± 5% of reading Measurement Method Colorimetric Light Source LED @ 610 nm Light Detector Silicon photocell Method Colorimetric method. The reaction causes a distinctive range of colours from yellow to green to blue to develop. This meter has been developed to work with fresh water samples. Power Supply Battery – 1 x 1.5V AAA Power Auto Off After 10 min. of inactivity Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing Dimensions 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”) Weight 64 g (2.25 oz.)
