The Advanced® Model 3D3 uses the industry preferred freezing-point method for an accurate determination of total concentration. With its optimal sample size capability and wide measurement range, provides precise results in a wide variety of laboratory applications with a rapid response of just 2 minutes. A unique key switch provides two operations levels: operator level for routine operation and supervisor level for testing, diagnostics, and calibration. Other features include simple push button design, 20-character digital display, flexible data reporting, frost-free cooling chamber and automated calibration. Selectable time and date formats, and sample identification numbers. Connects to PC or printer through standard computer interface. One-year limited warranty on workmanship and all parts except glass, plastic and parts warranted by their makers. Specifications: Sample Size: 0.2 or 0.25 mL, Units: mOsm/kg H2O, Low: 0 to 2000 mOsm/kg H2O, High: 1400 to 4000 mOsm/kg H2O, Linearity: Less than ±0.5% from straight-line, Repeatability: 0 to 400 mOsm ±2 mOsm/kg (1 S.D.), Resolution: 1 mOsm/kg, Communications: RS-232C and parallel printer ports, Storage Temperature: -40°F to +158°F or -40°C to +70°, Operating Temperature (ambient): 64°F to 95°F or 18°C to 35°C, Room Humidity: 5-80% (non-condensing), Start-up: Immediately, from stand-by; under 5 minutes, from power on, Dimensions (head up) in. (cm) WxDxH: 13 x 17 x 16 (32 x 43 x 41), Voltage: 100 to 130 VAC or 200 to 250 VAC, Frequency: 50 or 60 Hz, Fuses (2): 250 VAC time delay (T), Power: 150 watts, Memory Backup: Integral lithium cell; 10 years typical life, Net Weight: lbs (kg): 33 (15), Shipping Weight: lbs (kg): 38 (17).