When used correctly, the digital thermometer is accurate enough to meet daily needs and safer than the mercury thermometer. Different types of alcohol are used for different conditions; an ethanol alcohol thermometer, for example, cannot perform very well at temperatures too far over the boiling point of ethanol. But if the column is red or some other color, then it's more likely an alcohol thermometer and safe to use - as long as you're patient enough to wait that long! $10.99. As is cools, it contracts and moves lower in the glass tube. as the temperature increases the liquid in the bulb expands and pushes higher into the glass tube. Alcohol Thermometers: Alcohol thermometers are used to measure temperatures from -115°C to78.5°C. You can use one to detect a fever, and people also often use them in cooking in order to determine if a roast is cooked to the proper temperature. How do I Choose the Best Freezer Thermometer. I remember my mom once broke one when she was shaking it down - she accidentally banged it on the counter! I'm not sure if it's got mercury in it or not. These types of thermometers are safer because if the glass vial breaks, the alcohol will simply evaporate and will not cause any harm. Use a cotton pad dampened with isopropyl alcohol or a disinfecting wipe to clean the rest of the thermometer. Are you a teacher? Wikibuy Review: A Free Tool That Saves You Time and Money, 15 Creative Ways to Save Money That Actually Work. eNotes.com will help you with any book or any question. As the temperature goes down, the fluid contracts, dropping down the capillary. Rubbing alcohol can disinfect thermometers between uses, advises the American Academy of Pediatrics. Great for traveling or for students to keep in their backpacks, this thermometer is compact and comes with a storage case. Log in here. The most common liquid used in common household thermometers used to be mercury, but because of that material's toxicity, it has been replaced by alcohol, or ethanol. Glass thermometers with alcohol inside may also be used for oral temperatures. Let the alcohol dry completely, or rinse the tip of the thermometer … Digital thermometers can be bought at grocery, drug, or medical supply stores. Start your 48-hour free trial and unlock all the summaries, Q&A, and analyses you need to get better grades now. Disinfect the Entire Thermometer . Is It Safe to Mix Ciprofloxacin and Alcohol? Thermometers such as mercury thermometers, alcohol in glass thermometer, constant pressure gas thermometers, and platinum resistance thermometers are designed on the basis of technology. Thermometer is commonly made of a glass tube which is filled with liquids. Alcohol thermometers are used rather than mercury thermometers in very cold regions because alcohol has a lower freezing point than mercury. For small crevices, use a cotton swab soaked in alcohol. Then follow these instructions to clean and sanitize a digital thermometer before … Remove the thermometer from the ear and clean the tip with cotton and alcohol. Ethanol-filled thermometers are used in preference to mercury for meteorological measurements of minimum temperatures and can be used down to −70 °C (−94 °F). Use the thermometer immediately and then repeat the cleaning process. Non-Contact Digital Infrared Forehead Thermometer Medical Grade 1 … $13.99. However, once you’ve used it, it’s important to clean it off correctly. Rectal thermometer usage is usually limited to taking a baby's temperature, but this method also may be used on aging adults who are ill. Doctors say that taking rectal temperature is the most accurate, especially for children under the age of four or anyone else who cannot cooperate in the taking of an oral temperature. 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