Lollipop™ Thermometer is waterproof New heads-up Lollipop™ Traceable® Waterproof/Shockproof Thermometer replaces hazardous mercury units.Stainless-steel probe is resistant to most laboratory chemicals. Wide range covers 99 percent of the lab’s routine temperature measurements: –58 to 572°F and –50 to 300°C. Resolution is 0.1° from –20 to 200°; 1° outside this range. Accuracy is ±1°C between 0 and 100°C. Ultra™ model accuracy is ±0.4°C at tested points. Reading updates every second.Records minimum/maximum reading At the touch of a button, memory recalls highest and lowest temperature readings over any time period. Reading''s updated every second. Solid-state construction eliminates dangers inherent in breakable glass and toxic mercury thermometers.All-weather compatible Operates without fail in any lab condition—outdoors too. Waterproof construction is ideal for wet labs, splashdowns, and virtually all field applications. Engineered to be shockproof in drop tests up to 1.5 m. Bright 6.4mm-high display is easy to view.Traceable to NIST for accuracy To assure accuracy an individually serial-numbered Traceable® Certificate is provided from an ISO 17025 calibration laboratory accredited by A2LA (A2LA, UKAS, and NABL calibration certificates are all mutually recognized).It indicates traceability to standards provided by NIST (National Institute of Standards and Technology). Supplied complete with stainless-steel probe, probe cover, and silver-oxide battery (runs continuously for one year).