Hanna Phosphate Checker - Low Range The Hanna Phosphate Checker - Low Range HI713 is a compact handheld colorimeter for measuring phosphate from 0.00 to 2.50 ppm. It gives a direct digital phosphate result, making it easier to monitor aquarium and water-quality conditions without relying on visual colour matching. HI713 Low Range Phosphate Testing The HI713 is designed for low range phosphate testing in applications where phosphate is expected within the 0.00 to 2.50 ppm range. For reef aquariums that need ultra-low phosphate tracking, a marine ultra-low range phosphate or phosphorus checker may be more appropriate. Low Range Phosphate Checker Features Measures phosphate from 0.00 to 2.50 ppm. 0.01 ppm resolution helps track changes clearly. Digital colorimeter result reduces human colour interpretation error. Uses an adaptation of the ascorbic acid method. Simple one-button checker format is easy to use for routine testing. Compact handheld design stores easily with aquarium test equipment. Works with Hanna HI713-25 replacement reagents. Calibration check set HI713-11 is available separately. Hanna HI713 Specifications Part Number: HI713 Product type: Low range phosphate handheld colorimeter Range: 0.00 to 2.50 ppm phosphate Resolution: 0.01 ppm Accuracy at 25°C / 77°F: ±0.04 ppm ±4% of reading Light source: LED at 525 nm Light detector: Silicon photocell Method: Adaptation of the ascorbic acid method Battery type: 1 x 1.5V AAA battery Auto shut-off: After two minutes of non-use Dimensions: 86.0 x 61.0 x 37.5 mm / 3.4 x 2.4 x 1.5 in Weight: 64 g / 2.3 oz Replacement reagent set: HI713-25 for 25 tests Official Hanna HI713 Video Using the Hanna Low Range Phosphate Checker Zero the checker with the sample, add the HI713 reagent packet, mix until dissolved, and read the phosphate result on the display. Keep cuvettes clean and use fresh reagents for consistent testing. What's Included HI713 Phosphate Low Range Checker HC 2 sample cuvettes with caps Phosphate LR reagent starter kit for 6 tests Battery Instructions Quick start guide
