Arthur Kallet was a leading consumer advocate.

An engineer, Kallet co-authored a 1933 book entitled 100,000,000 Guinea Pigs: Dangers in Everyday Foods, Drugs and Cosmetics

100,000,000 Guinea Pigs

100,000,000 Guinea Pigs: Dangers in Everyday Foods, Drugs, and Cosmetics is a book written by Arthur Kallet and F.J. Schlink first released in 1933 by the Vanguard Press and manufactured in the United States of America...

 with fellow engineer Frederick Schlink

F. J. Schlink

Frederick J. Schlink was an American consumer rights activist. He co-wrote the book 100,000,000 Guinea Pigs with Arthur Kallet, and co-founded the watchdog groupConsumers Research.-Biography:...

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In 1936 he left as director of Consumers Research

Consumers Research

Consumers' Research is a defunct non-profit organization established in 1929 by Stuart Chase and F.J. Schlink , after the success of their book Your Money's Worth: a study in the waste of the Consumer's Dollar galvanized interest in testing products on behalf of consumers...

 after its head F.J. Schlink fired three striking employees who had tried to form a union, and joined with Amherst College

Amherst College

Amherst College is a private liberal arts college located in Amherst, Massachusetts, United States. Amherst is an exclusively undergraduate four-year institution and enrolled 1,744 students in the fall of 2009...

 professor Colston Warne

Colston Warne

Colston Estey Warne was a professor of economics and one of the founders of Consumers Union , in 1936...

 (who would chair the CU board from 1936 to 1979) to found Consumers Union

Consumers Union

Consumers Union is a non-profit organization best known as the publisher of Consumer Reports, based in the United States. Its mission is to "test products, inform the public, and protect consumers."...

 and Consumer Reports

Consumer Reports

Consumer Reports is an American magazine published monthly by Consumers Union since 1936. It publishes reviews and comparisons of consumer products and services based on reporting and results from its in-house testing laboratory. It also publishes cleaning and general buying guides...

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In 1957 Kallet broke with Warne and left Consumers Union to form The Medical Letter, Inc.

The Medical Letter, Inc.

The Medical Letter, Inc. is a nonprofit organization founded in 1958 by Arthur Kallet, the co-founder of Consumers Union, and Harold Aaron. Since 1958, The Medical Letter, Inc. has no affiliation whatsoever with Consumers Union...

, and in 1961 Buyer's Laboratory.

He died of viral pneumonia.