He co-wrote the book 100,000,000 Guinea Pigs with Arthur Kallet, and co-founded the watchdog group Consumers' Research.
After work in quality control for Firestone Tire and Rubber Company, and for the Bell Telephone Laboratories, he became an assistant secretary for the non-profit American Standards Association.
[2][3] In 1927, Schlink was co-author, with Stuart Chase, of the bestseller, Your Money's Worth, a warning about sales pressure and misleading advertising.
Arthur Kallet, the secretary of the group, enlisted Schlink's aid as co-author of One Hundred Million Guinea Pigs in 1933.
The book caused a stir, noting that some well-advertised products (including mouthwash and hair dyes) were sometimes useless and even dangerous.