3 years on display, 1 year on cable & probes Our Sales Price: $2,199.00 YSI List Price: $2,700.00 * DO, Temp, Conductivity probes * Carrying Case (soft-sided) * DO Cap membrane kit (6 ea. with electrolyte) Probes: pH probe - $165 Combination pH/ORP probe - $255 Cables: Add $89 for 10 meter cable instead of 4 meter cable OR Add $169 for 20 meter cable instead of 4 meter cable. Rechargeable Battery Kit: with fast charge feature Extra Membrane Kits (6 ea. caps + electrolyte) $38 Barometer: Internal barometer can be user-calibrated and displayed along with other data, used in dissolved oxygen calibrations, and logged to memory for tracking changes in barometric pressure. $210 Flow Cell: used for Groundwater Sampling $289 Rugged, reliable and waterproof, the YSI 556 MPS combines the versatility of an easy-to-use, easy-to-read handheld unit with all the functionality of a multiparameter system. Featuring a waterproof IP-67, impact-resistant case, the YSI 556 MPS simultaneously measures dissolved oxygen, pH, conductivity, temperature, and ORP. The YSI 556 MPS assists the user in conforming to GLP standards. · Field-replaceable DO electrode modules; pH and pH/ORP probes · Easy-to-use, screw-on cap DO membranes · RS-232 and Compatible with EcowatchTM for WindowsTM data analysis software · User-upgradable software from YSI website · Stores over 49,000 data sets, time and date stamped . Graphing feature to display graphs of parameters over time . Multiple language capabilities |