Versatile, multiparameter handheld instrument. Rugged and reliable, the YSI 556 MPS (Multi Probe System) combines the versatility of an easy-to-use, easy-to-read handheld unit with all the functionality of a multiparameter system. Featuring an IP-67, impact resistant case, the YSI 556 MPS simultaneously measures dissolved oxygen, pH, conductivity, temperature, and ORP.

		Field replaceable sensors
		Easy to use screw on cap membranes
		Available with 4, 10 ,and 20m cable lengths
		Three-year warranty on the instrument; one-year on the probe modules
		Stores over 49,000 data sets (time and date stamped) and calibration record
		Compatible with Ecowatch™ for Windows™ data analysis software