On Fri, Nov 05, 1999 at 01:50:51PM +1100, Andrew Clark wrote: > I'm wondering if anyone out there knows where I could get a pH probe > with serial output and a water hardness probe with serial output. Hi Andrew, You can call HANNA INSTRUMENTS, they have a Ph-meter with RS232 Sorry I don't have the address nor ohne number. JY -- Jean-Yves F. Barbier <jybarbier@wanadoo.fr> Computer programmers do it byte by byte.