Rugged line of 3/4″ -3/4″ & 3/4″ – 1″ MNPT pH & ORP sensors for in-line and standpipe applications. Available in slurry / viscous, sulphide, high temperature, cyanide, organic applications and many other difficult process applications. IPI sensors are manufactured in the US and their high quality ensures they are unsurpassed in any mining applications.