RECORD ACCURATE AND RELIABLE PH MV ORP AND TEMPERATURE MEASUREMENTS WITH THE THERMO SCIENTIFIC ORION STAR A221 PH PORTABLE METER IDEAL FOR A WIDE RANGE OF APPLICATIONS AND ADVANCED PH ANALYSIS IN THE FIELD. PERFORM UP TO A FIVE POINT PH CALIBRATION LOG UP TO 1000 DATA POINT SETS WITH TIME / DATE STAMP AND EASILY TRANSFER CALIBRATION AND DATA LOGS VIA USB OR RS232 TO A PRINTER OR COMPUTER WITH FREE DOWNLOADABLE ORION STAR COM SOFTWARE. WATERPROOF METER ENSURES DURABLE RUGGED PERFORMANCE IN OUTDOOR ENVIRONMENTS WITH AN IP67-RATED HOUSING. FEATURES UL STYLE""MARGIN-TOP 0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" MEASURE PH MV RELATIVE MV OR ORP WITH TEMPERATURE PERFORM UP TO A FIVE POINT PH CALIBRATION USING AUTOMATIC BUFFER RECOGNITION OF NIST OR DIN BUFFER GROUPS WITH CHOICE TO MANUALLY ENTER CUSTOM BUFFER VALUES INFORMATIVE EASY-TO-READ BACKLIT GRAPHIC DISPLAY WITH CLEAR ONSCREEN INSTRUCTIONS SIMPLIFIES OPERATION CAPTURE YOUR CRITICAL READINGS WITH MEASUREMENT STABILITY INDICATOR AND SELECTABLE READ MODES AUTO-READ HOLDS A STABLE READING AND CONTINUOUS SHOWS CHANGING READINGS WITH HOLD OPTION DATA LOG COLLECTS AND DATE/TIME STAMPS UP TO 1000 MEASUREMENT SETS NON-VOLATILE METER MEMORY ENSURES YOUR DATA AND SETTINGS ARE PROTECTED EVEN WITH LOSS OF POWER ORION STAR COM SOFTWARE FACILITATES DATA TRANSFER TO A COMPUTER VIA USB OR RS232 CONNECTIONS FLEXIBLE POWER OPTIONS WITH AA BATTERIES OR OPTIONAL UNIVERSAL POWER ADAPTER IP67-RATED HOUSING IS WATERPROOF FOR RUGGED FIELD OPERATION METERS OFFER CE TUV 3-IN-1 AND FCC CLASS A CERTIFICATIONS AND 3-YEAR REPLACEMENT WARRANTY INCLUDES UL STYLE""MARGIN-TOP 0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" STAR A221 PH METER 8107UWMMD ORION ROSS ULTRA TRIODE GEL EPOXY PH/ATC ELECTRODE 3 METER CABLE ORION PH 4 7 10 BUFFER AND RINSE POUCHES 10 EACH ORION ROSS PH ELECTRODE STORAGE SOLUTION 475 ML PROTECTIVE METER ARMOR WITH ELECTRODE HOLDER HARD-SIDED FIELD CASE 4 AA BATTERIES L