Caffeine tester
The sensor, called caffeine Orange, can visualize the amount of caffeine in any drink.
Users can see a change in the color of the drink simply by shining a non-toxic green laser indicator into the drink, the researchers said. Green, yellow and red represent low, medium and high caffeine concentrations, respectively. In addition, researchers have developed an automatic caffeine detection kit that can purify and concentrate caffeine in different samples. The chip laboratory (Lab-on-a-chip) system uses microfluidic technology to extract and detect caffeine in very few liquids.
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The United States shows that the world's largest coffee cup is more than 30,000 times that of an ordinary cup.
Global Network reporter Zhang Zhe reported that according to South Korean media reports, the US state of Georgia displayed a 7600-liter coffee cup on the 23rd of this month, which is 32160 times larger than the ordinary coffee cup. According to Seoul Sports, South Korea, the coffee cup displayed in Georgia of the United States has a capacity of 7600 liters, breaking the 2840-liter coffee cup made by Panama in 2007.
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Creative coffee cup Drop Rest mug "small waist" to retain coffee droplets
Usually we drink coffee, often encounter such a problem, coffee will flow down from the mouth of the cup, and coffee stains will leave a circle on the table.
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