Laboware is presenting the product best in quality, Non-mercury thermometer for measuring water temperature in an educational setting or water sampling applications • Measures temperature from -5 to +45 degrees C in 0.5 degree increments • Plastic jacket casing helps protect against breakage • Window opening for visibility of temperature readings • Engraved graduations on white tubing for readability AVAILABLE IN DIFFERENT RANGES: · Thermometers, -10 to 110 C Mercury, in cardboard base · Thermometers, 10 to 110C Mercury, in plastic case · Thermometers, 0 to 150 C Mercury, in plastic case · Thermometers, 0 to 250 C Mercury, in plastic case · Thermometers, 0 to 360 C Mercury, in plastic case