An international team of researchers based at McMaster has figured out a way to adapt the good old litmus test so it can detect bacteria such as E. coli. The team, which is connected through the ...

Litmus paper, long known as a low-tech method of testing substances for acidity, might have a new use as a cheap, quick way to test for E. coli, according to researchers at McMaster University in ...

Harvard University professor George Whitesides is making very sophisticated litmus paper. Unlike the simple acid or alkali strips familiar from school, his pioneering work owes more to microfluidics ...

[William Finucane] is making his own litmus paper by harnessing the power of cabbage. The process is much easier than the faux gunpowder he made, as it take just the one ingredient and a few kitchen ...

I must admit that I have not considered using litmus paper to determine general health. Human saliva has an alkaline pH, while stomach acid has an acid pH, so I am not quite sure what you would like ...