YSI 556
Operation Manual
Specification Sheet
Cheat Sheet 
ItemDailyWeeklyMonthly
Handheld Only (pH/DO/Cond/Temp/ORP/Sal/TDS) $50 $150 $450
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Handheld w/Baro $55 $165 $495
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4M Cable $55 $165 $450
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10M Cable $65 $175 $500
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20M Cable $75 $200 $525
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Flow Cell $5 $15 $45
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Rugged, reliable and waterproof, 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 multi-parameter system. 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.