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3230 Industrial Way, SW | Suite B | Snellville, GA 30039       (800) 474-2490


    The YSI 556 MPS (Multiprobe System) is a rugged, reliable, easy-to-use, easy-to-read, handheld readout that simultaneously measures 5 parameters and allows for easy readings from one of the compatible YSI 556 multiparameter probe and cable combinations. Probes are available with some variation in sensor configurations and with cables of different lengths for lowering into wells or for use with a flow cell. A barometer is available and compensates for accurate Dissolved Oxygen readings.

    The YSI 556 is our most popular water quality rental meter and holds up well to day after day use on environmental monitoring projects. As an added benefit  it stores over 49,000 time and date stamped data sets for viewing or downloading via RS-232. Compatible with EcowatchTM for Windows data analysis software. The impact resistant case is waterproof.

    The DO electrode & pH/ORP probes are field replaceable. The DO membranes are easily replaced using screw-on caps. Flow cell is optional.

    Select the YSI 556 below based on sensor type and cable length.
    Item # Description/Size Availability Qty Break Price Quantity
    WQM320-04
    YSI 556 Multiparameter Water Quality Meter: pH/ORP, EC, DO, Salinity, Temp, Barometer w/ 4M cable & PC adaptor RS232 in a soft case
    In Stock 1 $3,487.50
    WQM320-10
    YSI 556 Multiparameter Water Quality Meter: pH/ORP, EC, DO, Salinity, Temp, Barometer w/ 10M cable & PC adaptor RS232 in a soft case
    In Stock 1 $3,587.00
    WQM320-20
    YSI 556 Multiparameter Water Quality Meter: pH/ORP, EC, DO, Salinity, Temp, Barometer w/ 20M cable & PC adaptor RS232 in a soft case
    In Stock 1 $3,686.50
    WQM321-04
    YSI 556 Multiparameter Water Quality Meter: pH, EC, DO, Salinity, Temp, Barometer (No ORP) w/ 4M cable & PC adaptor RS232 in a soft case
    In Stock 1 $3,397.90
    WQM321-10
    YSI 556 Multiparameter Water Quality Meter: pH, EC, DO, Salinity, Temp, Barometer (No ORP) w/ 10M cable & PC adaptor RS232 in a soft case
    In Stock 1 $3,497.40
    WQM321-20
    YSI 556 Multiparameter Water Quality Meter: pH, EC, DO, Salinity, Temp, Barometer (No ORP) w/ 20M cable & PC adaptor RS232 in a soft case
    In Stock 1 $3,596.90
    WQM322
    YSI 556 Multiparameter Water Quality Meter with Barometer & PC adaptor RS232 in a soft case (no cable)
    In Stock 1 $2,069.80
    WQM330
    Flow Cell for YSI 556 Meter
    In Stock 1 $448.00