What To Know
- When placed under the tongue or in the armpit, the mercury rises or falls in a graduated glass tube, indicating the body temperature.
- Using a swift flick of the wrist, swing the thermometer downward in a quick, sharp motion.
- If the thermometer breaks, immediately dispose of it in a sealed container and contact the local hazardous waste disposal authority.
Measuring body temperature is a crucial part of medical diagnosis and monitoring. Traditional mercury thermometers, despite their accuracy, require careful handling and proper shaking to ensure accurate readings. This blog post will provide a comprehensive guide on how to shake thermometer down safely and effectively.
Understanding the Mercury Thermometer
Mercury thermometers utilize the expansion and contraction of mercury to indicate temperature. When placed under the tongue or in the armpit, the mercury rises or falls in a graduated glass tube, indicating the body temperature.
Importance of Proper Shaking
Before taking a temperature with a mercury thermometer, it’s essential to shake it down to ensure accuracy. Shaking down the thermometer redistributes the mercury evenly throughout the tube, preventing false readings due to uneven distribution.
Step-by-Step Guide to Shaking Thermometer Down
Materials:
- Mercury thermometer
- Clean cloth or paper towel
Instructions:
1. Hold the Thermometer: Grasp the thermometer firmly by the handle or end opposite the bulb.
2. Flick the Wrist: Position the thermometer parallel to the ground. Using a swift flick of the wrist, swing the thermometer downward in a quick, sharp motion.
3. Repeat Flicking: Continue flicking the wrist downward several times until you hear a distinct “click” or “snap” sound. This indicates that the mercury has settled at the bottom of the tube.
4. Check the Mercury Level: Hold the thermometer upright and observe the mercury level. It should be below the 94°F (34.4°C) mark.
5. Wipe the Thermometer: Use a clean cloth or paper towel to wipe any remaining mercury or moisture from the thermometer.
Troubleshooting Common Issues
Mercury Stuck in the Tube: If the mercury remains stuck above the 94°F (34.4°C) mark, the thermometer may need to be recalibrated.
Mercury Not Settling: This can occur if the thermometer is not shaken vigorously enough. Repeat the shaking process or consult a healthcare professional.
Broken Thermometer: If the thermometer breaks, immediately dispose of it in a sealed container and contact the local hazardous waste disposal authority.
Safety Precautions
- Avoid Contact with Mercury: Mercury is toxic. Avoid touching it or allowing it to come into contact with skin or clothing.
- Dispose of Thermometer Properly: When the thermometer is no longer needed, dispose of it according to local regulations for hazardous waste.
- Keep Thermometer Away from Children: Mercury thermometers should be kept out of reach of children.
Alternatives to Mercury Thermometers
If you prefer to avoid using mercury thermometers, several alternative options are available:
- Digital Thermometers: These use electronic sensors to measure temperature and provide a digital display.
- Infrared Thermometers: These measure temperature by detecting infrared radiation emitted from the body.
- Tympanic Thermometers: These measure temperature in the ear canal.
The Bottom Line
Shaking thermometer down is an essential step to ensure accurate temperature readings with a mercury thermometer. By following the steps outlined in this guide, you can safely and effectively lower the mercury and obtain reliable results. Remember to handle the thermometer with care and dispose of it properly when no longer needed.
Frequently Asked Questions
Q: How often should I shake a thermometer down?
A: Before each use.
Q: What is the “click” or “snap” sound I hear when shaking the thermometer?
A: It indicates that the mercury has settled at the bottom of the tube.
Q: Can I use a mercury thermometer if I’m pregnant?
A: No, avoid using mercury thermometers during pregnancy.
Q: What should I do if I break a mercury thermometer?
A: Dispose of it in a sealed container and contact the local hazardous waste disposal authority.
Q: Can I use a mercury thermometer to measure the temperature of water?
A: No, mercury thermometers are designed for body temperature measurement.
