Recording the temperature of thermometers should be done how often?

Recording the temperature of thermometers should be done at each time of use to ensure accuracy and reliability in measurements. This practice is essential because temperature readings can fluctuate, and verifying the thermometer's calibration before each use helps identify any discrepancies that may affect the results of experiments or clinical measurements. Regular checks at each usage help maintain high standards in laboratory settings or medical environments, where precise temperature readings are critical for both safety and efficacy.

Other options suggest less frequent checks, which could lead to outdated or erroneous measurements. Weekly, monthly, or quarterly checks may miss crucial variances that can occur between intervals, hence the emphasis on checking at every use to ensure immediate and consistent accuracy.