Yes - a company has developed simulated poop for toilet manufacturers to test flush capabilities
Genius pseudo-poo lets toilet-makers test flush capabilities
9 hrs ago
File this under "Things We Didn't Know." To measure the flushing capabilities of toilets, a company called Maximum Performance has developed what it considers the optimum poop-simulation compound. According to the company's lengthy "Performance Testing Protocol" document (the ultimate bathroom reading), the perfect pseudo-poo is made of 350 grams of extruded soybean paste -- that's sometimes encased in a Lifestyles condom -- and dropped into the bowl with four "loosely crumpled" balls of toilet paper that are undoubtedly monitored by a Crumple Control Department. "Our test protocol is not 'secret' nor does it use test materials that have no relationship to the 'real' demands upon a toilet fixture," says the company. Huh. Just ... huh.
http://now.msn.com/now/0427-toilet-flush-testers.aspx