Question by: Benedetta Santoro | Last updated: January 6, 2022
Rating: 4.1 / 5
To calibrate a thermometer it is sufficient to bring it to the temperature of melting ice, since these thermometers cannot measure 100 Celsius, by mixing ice and water in a container and immersing the thermometer in water.
What are the various steps required for the calibration of a thermometer?
WE PUT CUBES OF DARK ICE INTO THE BEAKER AND INSERT THE NON-CALIBRATED THERMOMETER. LET’S MARK THE POINT REACHED BY MERCURY, THAT IS 0 °, WITH A LINE. SUBSEQUENTLY INSERT THE THERMOMETER IN THE BECHER WITH BOILING WATER; LET’S MARK WITH ANOTHER LINE THE 2ND POINT REACHED BY MERCURY, THAT IS 100 °.
How dangerous is the mercury in the thermometer?
On the other hand, it is not irritating to the skin and mucous membranes and absorption through the skin is negligible. Even the accidental ingestion of drops of mercury after breaking a thermometer has no consequences, as metallic mercury is not absorbed in the intestine.
How do mercury thermometers work?
The tip is placed in the point of the body responsible for the detection, generally the axillary notch, but also the anal orifice. The temperature variation affects the volume of mercury, which expands along the tube and therefore along the graduated scale, thus allowing the body temperature to be read.
How do you bring down the temperature of the thermometer?
They place the thermometer in a sock and, holding the sock in such a way as to close it, shake it all: the centrifugal force allows the liquid to go down.
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How many minutes to measure the fever with the mercury thermometer?
The most common practice is the axillary detection: the thermometer is placed under the armpit for a time ranging from 3 to 5 minutes. In the case of a mercury thermometer, it must be cooled down before measurement.
How to clean the thermometer liquid?
In particular, care should be taken not to drop the instrument or to handle it in any way that could cause damage. When clinical thermometers are broken, clean the metallic liquid with a cloth moistened with soapy water.
Where are mercury thermometers located?
Speaking of online resources, currently on Ebay there are several proposals for mercury thermometers. Both used and new, or old stock models, perfect and complete with original packaging and case. Prices start from a minimum of 5 euros per piece up to over 20 euros.
How many minutes does it take to measure the fever?
Breathe through your nose and use your lips to hold the thermometer firmly in place for 3 minutes or until the digital device beeps.
What is the best thermometer?
- Glass thermometers are some of the most reliable and accurate around. …
- Digital thermometers, usually made of plastic, use a display on which the measured temperature is displayed. …
- Infrared thermometers measure the heat emitted from surfaces and body cavities.
How Much Mercury Does It Take to Die?
The minimum lethal quantity for humans varies between 3 and 15 mg per kg of body weight. In the case of organic mercury compounds, the high toxicity of the short-chain alkyl mercury compounds, in particular methylmercury, is a priority.
What happens if you inhale mercury?
Symptoms of contamination, whether by inhalation or ingestion, are always very evident. They include ataxia, paraesthesia in the hands and feet, muscle weakness, weakening of the visual field, hearing damage, and difficulty in articulating words.
What happens if you breathe in mercury?
Effects on human health
Symptoms of acute toxicity following high levels of exposure to methylmercury or mercury vapor include cough, sore throat, shortness of breath, corrosive bronchitis with chills of fever and dyspnoea, which can progress to pulmonary edema or fibrosis.
How to calibrate a digital thermometer?
Fill a glass with crushed ice. Add some clean water until the glass is full and mix. Wait about three minutes before inserting the sensor on the thermometer into the ice-filled water. Wait about thirty seconds and check that the thermometer reads 32 ° F.
How do you calibrate a Celsius scale thermometer?
The calibration of gas thermometers takes place in a similar way. The most used temperature scales are four: In the Celsius scale (or centigrade scale), the value 0 is assigned to the first fixed point and the value 100 to the second fixed point.
How can you build a mercury thermometer?
Building the Thermometer. Mix 75ml of cold water with 75ml of disinfectant alcohol. Use a measuring cup to mix these two liquids in equal parts. You can mix the solution in the measuring cup or pour it directly into a 500ml plastic water bottle.
How high should the underarm temperature be?
In adult patients, the temperature of an axillary measurement is lower than that of a rectal measurement up to 1.9 ° C! The normal axillary temperature range is approximately 34.7 ° C to 37.3 ° C.
When is armpit fever?
We can speak of fever when the body temperature exceeds 37 if measured by the skin – that is, axillary or inguinal – or 37.5 when measured by the rectal or oral route.
How high should an adult’s body temperature be?
Although there is not a standard body temperature that is the same for all individuals, we can identify a “normal” range between 36 ° C and 37 ° C, with a variation of about half a degree throughout the day.
Where to buy the fever thermometer?
Where to buy a fever thermometer
Fever thermometers are for sale online on a large number of highly reputable sites, such as Amazon.co.uk and Ebay. Here you can enjoy a really wide choice of models, from low cost ones to more complete alternatives.
Where can you buy the thermometer?
Where to buy digital and infrared thermometers online
- Amazon. Buy digital baby thermometers and infrared forehead thermometers on the # 1 e-commerce portal. …
- AliExpress. Non-contact infrared and digital thermometers are available now for online purchase. …
- eBay. …
Where to buy thermometer?
To buy a cooking thermometer, you can go to retailers such as Ikea, Happy Casa, specialized shops….
How do you get chromium mercury off the floor?
Remove mercurochrome stains with bleach
So that they don’t get damaged with bleach, like whites, you can use a few drops on a cotton ball and rub the stained part with the mercury chromium.
How to remove the mercury on the floor?
Use a flashlight to illuminate the floor with a grazing beam to identify drops which, just like metal spheres, will cast a long shadow on the floor, thus more easily identifying any metal residues still present in the environment.
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