The method of detecting the sugar content of cola with a hand-held sugar meter
1. Experimental principle:
The principle of the hand-held glucometer (hand-held refractometer) is that when light enters another transparent medium from one transparent medium, the phenomenon of refraction occurs. This phenomenon is caused by the different speeds of light in various media. Refractive index refers to the ratio of the speed at which light travels in air to the speed at which it travels in other substances. Jiahang's hand-held refractometer is also a hand-held sugar meter, which can detect both the refractive index and the sugar content of the solution.
2. Laboratory equipment and preparation:
Labware: Handheld Brix Meter
Preparation: cola, dropper, purified water, paper towel;
3. Experimental steps:
Instrument cleaning: Open the sample cover, use a dropper to take pure water, drop a small amount into the sample tank, and wipe it with a paper towel.
Start-up test: Turn on the glucometer, take 1-2ml of cola with a dropper, drop it into the sample tank, cover the sample cover, and press the test button to start the test (if you want more accurate accuracy, you can press and hold the test button for 2 seconds to get 15 test values. average of).
Test Data
The sugar content of cola was measured to be 9.9%. It can be seen that the sugar content of cola is relatively high. For the sake of health and weight, everyone should drink as little as possible. The sugar content of other fruit juice beverages and fruits can be detected by the same method. The hand-held glucometer is easy to operate and easy to understand when reading. In addition, the instrument is small and light, and it is easy to use with a battery.
