A novel new test for bacteria in fluids makes it as easy as observing a color change to confirm the presence of disease-causing pathogens, promising much easier diagnostic tests and greater food safety. A novel new test for bacteria in fluids makes it as easy as observing a color change to confirm the presence of disease-causing pathogens, promising much easier diagnostic tests and greater food safety. Biochemistry Analytical Chemistry Phys.org – latest science and technology news stories