HI97723 • HI97749 Chromium (VI) HR and LR Portable Photometers • 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 Hexavalent chromium salts are used in various industrial applications, such as in the manufacture of paints, dyes, explosives, and ceramics, and extensively in the metal ¡nishing and plating industries. Due to its toxicity to humans, animals, and aquatic life, hexavalent chromium is actively monitored and neutralized in wastewater from the above industries. Specifications HI97749 Chromium (VI) LR HI97723 Chromium (VI) HR Measurement Range 0 to 300 μg/L (as Cr (VI)) 0 to 1000 µg/L (ppb) (as Cr(VI)) Resolution 1 µg/L 1 µg/L Accuracy @25°C (77°F) ±10 μg/L ±4% of reading ±5 µg/L ±4% of reading Method adaptation of the ASTM Manual of Water and Environmental Technology, D1687 Diphenylcarbohydrazide Method Measurement System Light Source light emitting diode Bandpass filter 525 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 HI97723 and HI97749 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 HI97723C and HI97749C includes photometer, CAL Check standards, sample cuvettes (2), sample caps (2), plastic stoppers (2), 1.5V AA batteries (3), cuvette wiping cloth, scissors, CAL Check standard certificate, instrument quality certificate, instruction manual, and HI7101412 rigid carrying case. Reagents sold separately Reagents and Standards HI97749 HI97749-11 CAL Check standard cuvettes for chromium(VI) LR HI93749-01 chromium(VI) LR reagents for 100 tests HI93749-03 chromium(VI) LR reagents for 300 tests HI97723 HI97723-11 CAL Check standard cuvettes for Chromium(VI) HR HI93723-01 chromium(VI) HR reagents for 100 tests HI93723-03 chromium(VI) HR reagents for 300 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 10.78 | www.hannainst.com portable
RkJQdWJsaXNoZXIy MTI3NTM=