HI97752 Calcium and Magnesium Portable Photometer • Advanced LED optical system · Innovative optical design that utilizes a reference detector and focusing lens to eliminate errors from changes in the light source and from imperfections in the glass cuvette. · LEDs have a much higher luminous efficiency, providing more light while using less power. They also produce little heat, which could otherwise affect electronic stability. • CAL Check™ · Validate instrument performance at any time using CAL Check cuvettes made with NIST traceable standards. The CAL Check screen guides the user step-by-step through the validation process and user calibration. • On-screen tutorial mode with animations · Guides users step-by-step through the measurement process • Waterproof and floating IP67 case • Unit of measure is displayed along with reading • Built-in timer · Built-in reaction timer that ensures consistency between tests. • Error messages on display · Alerts to problems including no cap, high zero, and standard too low • GLP data · Displays the last calibration date. • Auto logging • Battery status indicator • Auto-shut off Signi¡cance of Use Calcium and magnesium both play important roles in the growth of plants. Calcium helps plant roots develop and increases the resistance and strength of plant tissues and stems. Magnesium is an indispensable mineral that helps in the production of chlorophyll, the light-absorbing green pigment that serves as an energy source for plants. It also increases vitamin concentrations and aids in uptake of phosphorus within the plant body. Specifications HI97752 Calcium and Magnesium Calcium Range 0 to 400 mg/L (ppm) (as CaÑ+) Resolution 1 mg/L Accuracy @25°C (77°F) ±10 mg/L ±5% of reading Method adaptation of oxalate method Magnesium Range 0 to 150 mg/L (ppm) (as MgÑ+) Resolution 1 mg/L Accuracy @25°C (77°F) ±5 mg/L ±3% of reading Method adaptation of the calmagite method Measurement System Light Source light emitting diode Bandpass filter 466 nm Bandpass filter bandwidth 8 nm Bandpass filter wavelength accuracy ±1.0 nm Light Detector silicon photocell Cuvette type round 24.6 mm diameter (22 mm inside) Additional Specifications Auto logging 50 readings Display 128 x 64 pixel B/W LCD with backlight Auto-off after 15 minutes of inactivity (30 minutes before a READ measurement) Battery type / Life alkaline 1.5 V AA (3) / > 800 measurements (without backlight) Environment 0 to 50°C (32 to 122°F); 0 to 100% RH, non-serviceable Dimensions 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0") Weight 380 g (13.4 oz.) Ordering Information HI97752 is supplied with sample cuvettes (2), sample caps (2), plastic stoppers (2), 1.5V AA batteries (3), instrument quality certificate, and instruction manual. CAL Check standards and testing reagents sold separately HI97752C includes photometer, CAL Check standards, sample cuvettes (2), sample caps (2), plastic stoppers (2), 1.5V AA batteries (3), cuvette wiping cloth, CAL Check standard certificate, instrument quality certificate, instruction manual, and rigid carrying case. Reagents sold separately Reagents and Standards HI97752 HI93752-01 calcium and magnesium reagents for 100 Tests (50 each) HI93752-03 calcium and magnesium reagents for 300 Tests (150 each) HI97754-11 CAL Check standard cuvettes for magnesium HI937520-01 magnesium reagents for 50 tests HI937520-03 magnesium reagents for 150 tests HI97752-11 CAL Check standard cuvettes for calcium HI937521-01 calcium reagents for 50 tests HI937521-03 calcium reagents for 150 tests See page 10.128 for standard reagents; see page 10.129 for CAL Check kits; see page 10.66 for general accessories 10 Photometers 10.123 www.hannainst.com | portable
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