How often do we use thermometers? How important it is to sanitize thermometers? Well, calibration is very essential and mandatory. Thermometers should be sanitized before the first time it is being used and also in between usage. Calibrating a thermometer is a very elemental process. There are two ways to calibrate a thermometer; which are listed below.
Ice-point technique: In this method you fill an insulated container with water and crushed ice. Ice is supplementary to attain a temperature of 32deg F. Allow the temperature to establish for around 4-5 minutes and then immerse the thermometer into the container to be calibrated to the appropriate length. To avoid any blunder the stem of the thermometer has to be kept isolated from the sides and the bottom of the container. This method usually allows the calibration to within 0.1deg F.
Boiling point technique: Fill a container with water to attain the rolling boil temperature. Plot the thermometer in the centre of the container and submerge it in water completely. In this process avoid touching it to the sides and the bottom of the container. Keep it immersed in the boiling water for around 30 seconds, until the dial stops movement. Keep it immersed in the water until the temperature reads 212deg F. This method usually allows calibration to within 1.0deg F.
A PH meter is usually used to measure the basic and the acidic implicit of any given solution. It is mostly utilized by laboratory technicians, biologists, technicians etc. It is the most on-target instrument available for the precise testing of PH levels.
Calibration of PH meter is a very simple process. You turn on the PH meter. After waiting for around 30 minutes for the set up to warm up, take the electrode out of the solution. Wash it lightly with distilled water, without wiping the electrode membrane. Immerse the electrode in a ph7 buffer and press the calibrate button. Wait for the pH icon to stop flashing and press the measure button. Rinse the electrode with distilled water again and press the measure button. Wait for the pH icon to stop flashing after which you can record the pH of the given sample.
