General Tools UV512C Digital Ultraviolet UVC Light Meter is designed to measure ultraviolet light in the range from 220 to 275 nanometers (nM). The illumination range of the meter allows users to conduct the most precise quantitative measurements of ultraviolet radiation for radiometry and laboratory requirements, UV-curing in off-set printing, lamp UV intensity & aging, industrial process monitoring, semiconductor fabrication, sunlight UV intensity to prevent skin damage, sterilization and environmental monitoring. Conduct UV degradation studies for pharmaceutical, cosmetic, semiconductor, printing, forensic applications and more. The UV light intensity appears on the large backlit display in either ìW or mW/cm² while the small lower display simultaneously shows minimum, maximum, average, and recorded data. Up to 20 data points can be recorded automatically at a variety of intervals. SPECIFICATIONS Measurement ranges: 1 to 9999 μW/cm2 (low) and 0. 01 to 40 mW/cm2 (high) Measurement accuracy: (4% of reading +1 digit) Spectral range: 220 to 275 nm Calibration point: 254 nm Sampling time: 0. 3 seconds Memory capacity: 20 measurements, plus 1 for interval time Interval time options: 1, 2, 5, 10 and 30 seconds and 1, 3, 5 and 10 minutes Operating temperature: 32° to 122°F (0° to 50°C) @ Weight: 3. 2 oz. (90g) Power source: "9V" battery (included) GENERAL TOOLS - THE PRECISE TOOL FOR DOING THE JOB EXACTLY RIGHT. Offering over 1, 000 tools, we're proud to provide tradesmen, craftsmen and DIYers around the world with a broad range of affordable, specific-purpose mechanical hand tools and precision measuring and inspection tools. For inquiries, please contact our Customer Service Department at 212-431-6100. We strive to provide our customers with 100% satisfaction. WORK SMARTER, MEASURE BETTER & BE MORE PRODUCTIVE WITH GENERAL TOOLS