Instruction Manual pH 5+, pH 6+, Ion 6+1. INTRODUCTIONThank you for selecting our pH 5+, pH 6+, or Ion 6+ portable meter. Thismicroprocessor-based handheld instrument is both economical and easy to use.The pH 5+ measures pH and temperature (o C).The pH 6+ and Ion 6+ measure pH, mV (ORP) and temperature ( o C).The Ion 6+ can also measure direct ion concentration of various ions (mono anddivalent) using an ion selective electrodes (ISE). The mV mode is also useful for ISEs.The 5+/6+ series meters advance our popular 5/6 series meters that were introduced in1998.Each meter includes alkaline “AAA” batteries, a rubber armor / stand, and instructionmanual. Please refer to Section—7 Replacements and Accessories for informationon additional accessories and calibration solutions.We take great pride in every instrument we manufacture and hope thisone serves you well.If you are viewing an electronic PDF version of this manual, look forbold andunderlined hyperlinks in the Table of Contents and elsewhere. Clicking onthem will immediately take you to the corresponding location in the manual.*Find other helpful tips listed in grey boxes like this one!1