The Model 555P Meter features two independent channels with a split display and dual electrode reference. Our pH/Ion meter uses advanced software and technology to ensure accurate, reliable, and precise results. Upon power up, a diagnostic test starts the application. Sophisticated microprocessor technology then runs complete measurements and analysis, providing numerous options for specifications. Automatic read and endpoint sensing reduce keypad interaction, and a multiparameter LCD provides readings, user prompts, and help messages. To help laboratories conform to regulatory requirements, our special "Good Laboratory Practices" data provides calibration data, sample readings, and experimental conditions at the time of measurement.

Model	M 555 P
Parameter	mV (high res.):   -999.9 ... +999.9
	mV (low res.):  -1999 ... +1999
Range	pH-measuring
	pH (low res.):  -2,00 ... 19,99
	pH (high res.):  -2,000 ... 19,999
Temp	-5.0 ... 105.0 °C
ION/Conc. resolutions	1 / 0.1 / 0.01 / 0.001
pH. resolution:	0.001pH
pH Accuracy	+/- 0.004 pH units
mV Accuracy	0.2 mV
ION/Conc.	1 / 0.1 / 0.01 / 0.001
Temp	0.1, +/- 0.1 °C
Calibration	Auto
Calibration points	1-, 2-, 3-points & 1 to 7 ion
Automatic Cal.	Yes
Buffer	16 Buffer Sets
Temp. Comp.	Yes
GLP	Yes
Memory	4500 Data Sets
Output	RS 232
Date/Time	yes
Applications	General/ Research
Self test	Yes
Waterproof	IP 43
Power supply	Multi 115V
Warranty	3 Years – Meter only