Which beverage is is fluorescent in UV light?

Sprite

milk

tonic water

pineapple juice

Tonic water is transparent in daylight. Under ultraviolet light, the quinine makes it fluorescent (pictured), even though it is present in a negligible concentration.

Luca Biaggi

beverageschemistrylightultraviolet

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Answers by country

Vietnam

88%

11%

the Netherlands

76%

12%

France

10%

75%

10%

Switzerland

12%

11%

67%

Australia

66%

14%

115

Austria

12%

66%

14%

Germany

11%

65%

11%

651

Canada

16%

63%

14%

Unknown

17%

62%

12%

the United Arab Emirates

20%

60%

Singapore

18%

59%

14%

the United States

18%

13%

50%

16%

807

the Philippines

26%

12%

48%

10%

the United Kingdom

18%

14%

47%

17%

358

Poland

25%

14%

46%

13%

12959

Pakistan

20%

17%

46%

14%

120

Nigeria

28%

13%

45%

12%

145

Malaysia

28%

45%

19%

Ghana

25%

45%

India

26%

16%

43%

10%

967

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