Determination of sugar content in rock sugar Sydney

In the summer, everyone likes to drink a variety of drinks. To some extent, beverages have become a part of our daily lives. But it comes with a variety of problems. The amount of sugar in the drink is high and it will affect our health. Is there a suitable instrument for the sugar content in the beverage?

This summer, a company person communicated with me, did you have a method to calibrate the instrument for measuring soluble solids? I checked the instructions and found that in addition to zero calibration, I needed a 10% sucrose solution for slope calibration. I saw it yesterday afternoon. When a friend is drinking rock sugar and Sydney, suddenly there is a thought in his mind. The detection of sugar in the beverage is not the detection of soluble solids, because its standard calibration substance is sugar. So I said dry, bought the sugar candy Sydney, made the following preparations:

material

A clean small beaker; a bottle of pure sucrose; a bottle of pure water; a straw of straw; a bottle of rock sugar Sydney, a specification of 500mL; some cotton wool, used to wipe the instrument; the instrument used is Atago-Japan 5000a refractometer;

Measuring process

1. Turn on the instrument and preheat for 30 minutes. The stable temperature of the instrument is 20 degrees Celsius;

2. Zero calibration with pure water;

3, weighed 10.0000 grams of sucrose, dissolved in a 100 ml volumetric flask, and calibrated on the instrument, the measured value is 10.01, indicating that the standard I made is good;

4, open the rock sugar Sydney juice, pour into a clean beaker, use a Pasteur pipette to draw a small amount of sample, drip onto the detector, cover it; click start to read, the measured result is the sugar content of the sugar candy Sydney, the number of repetition Times, take the average, wipe the lens with cotton wool after each measurement;

I conducted five measurements, and the results of the five measurements are shown below.

I think that the sugar content in Master Kong Sugar Sydney is 12.65%;

A bottle of rock sugar Sydney contains more than 60 grams of sugar, it is really unpredictable, I am scared! So for everyone's health, you should drink more boiled water, Yuan Fang, what do you think?

The above experiments and data are all contributed by Mr. Shi Shi, thank you!