YSI Professional Plus

Handheld Multiparameter Water Quality Meter

YSI’s Professional Plus handheld multiparameter water quality instrument provides advanced features, low cost of ownership, and extreme flexibility through its use of interchangeable cables and probes. Options are available for DO, pH, conductivity, ORP, Ammonium, Chloride, and Nitrates. Cables are available for various sensor combinations in lengths ranging from 1 to 100 meters. The Quattro cable allows up to four probes (5 parameters plus barometric pressure) to be monitored simultaneously. Cables can be swapped within seconds allowing the Professional Plus to make an easy transition between the field and the lab.

YSI's Professional Plus handheld multiparameter water quality instrument provides advanced features, low cost of ownership, and extreme flexibility through its use of interchangeable cables and probes. Options are available for DO, pH, conductivity, ORP, Ammonium, Chloride, and Nitrates. Cables are available for various sensor combinations in lengths ranging from 1 to 100 meters. The Quattro cable allows up to four probes (5 parameters plus barometric pressure) to be monitored simultaneously. Cables can be swapped within seconds allowing the Professional Plus to make an easy transition between the field and the lab.

The YSI Professional Plus is the recommended replacement for the 556 MPS multiparameter meter. It can also be configured to replace the Model 63 pH and conductivity meter, or any of YSI's classic handheld line, while providing the increased versatility of all the other available probe and cable options.

Every Professinal Plus configuration measures temperature (built into every cable) and barometric pressure (built into the instrument). Three types of DO probes are available, galvanic, polarographic, and a self stirring BOD probe that is excellent for lab use. Conductivity probes can also derive resistivity, salinity, specific conductance, and total dissolved solids. The pH probes are very accurate with a resolution of .01 and the ability to perform up to a 6 point calibration. ORP, pH, Ammonium, Chloride, and Nitrate probes can be installed in any cable with an ISE port. A combination pH/ORP probe that uses only 1 ISE port is also available.

Both the galvanic and polarographic DO sensors from YSI feature the same range, accuracy, and resolution. When choosing between the two the deciding factor is warm up time vs sensor longetivity. Galvanic sensors require no warm up time. Polarographic sensors typically require warming up for 5 to 15 minutes, but have a longer sensor life.

The Professional Plus features a large, backlit, graphical LCD display with an integrated help system and multiple languages. Datalogging is built in with enough memory for 2,000 datasets, GLP event logging, and both interval and event based logging capabilities. The included Data Manager software is easy to use and allows the user to manage instruments and data, perform real time studies, and produce graphs. The Professional Plus helps to make your job easier with additional features like auto buffer recognition, auto stabilization, re calibration prompts, and an operating time of up to 80 hours with just 2 C alkaline batteries.

Rugged, easy to use, and reliable, the Professional Plus floats in water and is rated IP-67 even without its battery cover. It is covered by a 3 year warranty on the instrument, and 2 years on cables and probes. Military spec connectors, a rubber overmolded case, a scratch resistant display, and extensive in house drop testing, ensures field durability. The Professional Plus is well suited for the most demanding jobs and will provide many years of service.

YSI Professional Plus Ordering Instructions

The Professional Plus can be ordered as a complete kit below which includes the instrument, cable, probes, and a carrying case or lab dock. Alternatively, all the components can be ordered individually to form a custom configuration. Additional cables and probes can be ordered for use with any Professional Plus.

A custom Professional Plus configuration would consist of the instrument, a cable, and probes for that cable (if they are not included with the cable), all purchased seperately. Multiple cables and sensors can be ordered allowing the Professional Plus to be quickly reconfigured in the field for multiple tasks.

Cables are available below in different lengths and with different ports. All cables include a temperature probe, and some come with sensors included. Cables over 1 meter in length come with a cable management kit. Notes are provided to describe what probes are compatible and need to be purchased seperately. Probes, along with their cable compatibility, are also listed.

Calibration solutions and accessories like flow cells, carrying cases, replacement DO membrane kits, and cable weights are also available.

YSI Professional Plus Features

  • Interchangeable cables and probes provide versatility, minimize downtime, and reduce costs
  • A variety of probe and cable combinations area available
    DO, pH, ORP, Conductivity, Ammonium, Chloride, and Nitrates
  • Temperature and barometric pressure measurements included with every setup
  • Resistivity, salinity, specific conductance, and total dissolved solids derived from conductivity
  • Both the display and keypad are backlit*
  • On screen help system*
  • Software and communications saddle included*
  • Auto buffer recognition, 6 point pH calibration*
  • User upgradeable firmware
  • Single event or interval logging
  • 2,000 data-set memory
  • Software upgradable by USB
  • Durable probes, military spec connectors*
  • Durable enclosure, IP67 rated even without battery cover*
  • 3 year instrument warranty, 2 year cable warranty*

* Only available on handhelds from YSI

YSI Professional Plus Complete Kits

  • Part Number/Description
  • Price
  • Professional Plus4
  • 6050000

  • Cable
    Temp Port
    Conductivity Port
    ISE Port
    ISE Port 1
    ISE Port 2
    DO Port
    Case
    Flow Cell
    Flow Cell
    Flow Cell

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    To place an order by phone please call 1-888-234-5678

  • Call to Order
  • 603179Professional Plus Field Kit1
    4 meter cable with polarographic DO probe
  • $1,720.00 $1,634.00
  • 603178Professional Plus Field Kit1
    4 meter cable with galvanic DO probe
  • $1,720.00 $1,634.00
  • 603188Professional Plus Field Kit1
    4 meter cable with cond and pH probe
  • $1,940.00 $1,843.00
  • 603189Professional Plus Field Kit1
    10 meter cable with cond and pH probe
  • $1,990.00 $1,890.50
  • 603181Professional Plus Field Kit1
    4 meter cable with cond and galvanic DO probe
  • $2,100.00 $1,995.00
  • 603180Professional Plus Field Kit1
    4 meter cable with cond and polarographic DO probe
  • $2,100.00 $1,995.00
  • 603184Professional Plus Field Kit1
    4 meter cable wth polarographic DO and pH probe
  • $2,215.00 $2,104.25
  • 603185Professional Plus Field Kit1
    4 meter cable with galvanic DO and pH probe
  • $2,215.00 $2,104.25
  • 603182Professional Plus Field Kit1
    10 meter cable with cond and polarographic DO probe
  • $2,165.00 $2,056.75
  • 603183Professional Plus Field Kit1
    10 meter cable with cond and galvanic DO probe
  • $2,165.00 $2,056.75
  • 603186Professional Plus Field Kit1
    10 meter cable with polarographic DO and pH probe
  • $2,295.00 $2,180.25
  • 603187Professional Plus Field Kit1
    10 meter cable with galvanic DO and pH probe
  • $2,295.00 $2,180.25
  • 603191Professional Plus Field Kit1
    4 meter Quatro cable with cond, galvanic DO, and pH probe
  • $3,060.00 $2,907.00
  • 603190Professional Plus Field Kit1
    4 meter Quatro cable with cond, polarographic DO, and pH probe
  • $3,060.00 $2,907.00
  • 603223Professional Plus Field Kit1
    4 meter Quatro cable with cond, polarographic DO, and pH/ORP probe
  • $3,260.00 $3,097.00
  • 603224Professional Plus Field Kit1
    4 meter Quatro cable with cond, galvanic DO, and pH/ORP probe
  • $3,260.00 $3,097.00
  • 603165Professional Plus Lab Kit2
    ProBOD self stirring BOD probe
  • $2,000.00 $1,900.00
  • 603166Professional Plus Lab Kit2
    ProBOD self stirring BOD probe and 1 meter lab cable with pH probe
  • $2,180.00 $2,071.00
  • 603167Professional Plus Field and Lab Kit3
    ProBOD self stirring BOD probe and 4 meter field cable with DO probe
  • $2,420.00 $2,299.00

YSI Professional Plus Instrument Only

  • Part Number/Description
  • Price
  • 6050000Professional Plus1 instrument only2
  • $1,230.00 $1,168.50

YSI Professional Plus Cable Assemblies

  • Part Number/Description
  • Price
  • 60510-1Cable for Professional Plus, 1 meter
    1 ISE2 port3/temp
  • $265.00 $251.75
  • 60510-4Cable for Professional Plus4, 4 meter
    1 ISE2 port3/temp
  • $265.00 $251.75
  • 60510-10Cable for Professional Plus4, 10 meter
    1 ISE2 port3/temp
  • $310.00 $294.50
  • 60510-20Cable for Professional Plus4, 20 meter
    1 ISE2 port3/temp
  • $375.00 $356.25
  • 60510-30Cable for Professional Plus4, 30 meter
    1 ISE2 port3/temp
  • $475.00 $451.25
  • 60520-1Cable for Professional Plus, 1 meter
    DO port5/temp
  • $250.00 $237.50
  • 60520-4Cable for Professional Plus4, 4 meter
    DO port5/temp
  • $265.00 $251.75
  • 60520-10Cable for Professional Plus4, 10 meter
    DO port5/temp
  • $315.00 $299.25
  • 60520-20Cable for Professional Plus4, 20 meter
    DO port5/temp
  • $375.00 $356.25
  • 60520-30Cable for Professional Plus4, 30 meter
    DO port5/temp
  • $475.00 $451.25
  • 60520-100Cable for Professional Plus4, 100 meter
    DO port5/temp
  • $750.00 $712.50
  • 60530-1Cable for Professional Plus, 1 meter
    cond6/temp probe included
  • $325.00 $308.75
  • 60530-4Cable for Professional Plus4, 4 meter
    cond6/temp probe included
  • $335.00 $318.25
  • 60530-10Cable for Professional Plus4, 10 meter
    cond6/temp probe included
  • $395.00 $375.25
  • 60530-20Cable for Professional Plus4, 20 meter
    cond6/temp probe included
  • $440.00 $418.00
  • 60530-30Cable for Professional Plus4, 30 meter
    cond6/temp probe included
  • $550.00 $522.50
  • 6051010-1Cable for Professional Plus, 1 meter
    2 ISE2 ports78/temp
  • $565.00 $536.75
  • 6051010-4Cable for Professional Plus4, 4 meter
    2 ISE2 ports78/temp
  • $575.00 $546.25
  • 6051010-10Cable for Professional Plus4, 10 meter
    2 ISE2 ports78/temp
  • $625.00 $593.75
  • 6051010-20Cable for Professional Plus4, 20 meter
    2 ISE2 ports78/temp
  • $730.00 $693.50
  • 6051010-30Cable for Professional Plus4, 30 meter
    2 ISE2 ports78/temp
  • $835.00 $793.25
  • 6051020-1Cable for Professional Plus, 1 meter
    1 ISE2 port3/DO port5/temp
  • $560.00 $532.00
  • 6051020-4Cable for Professional Plus4, 4 meter
    1 ISE2 port3/DO port5/temp
  • $580.00 $551.00
  • 6051020-10Cable for Professional Plus4, 10 meter
    1 ISE2 port3/DO port5/temp
  • $630.00 $598.50
  • 6051020-20Cable for Professional Plus4, 20 meter
    1 ISE2 port3/DO port5/temp
  • $720.00 $684.00
  • 6051020-30Cable for Professional Plus4, 30 meter
    1 ISE2 port3/DO port5/temp
  • $855.00 $812.25
  • 6051030-1Cable for Professional Plus, 1 meter
    1 ISE2 port3/cond6/temp
  • $465.00 $441.75
  • 6051030-4Cable for Professional Plus4, 4 meter
    1 ISE2 port3/cond6/temp
  • $485.00 $460.75
  • 6051030-10Cable for Professional Plus4, 10 meter
    1 ISE2 port3/cond6/temp
  • $530.00 $503.50
  • 6051030-20Cable for Professional Plus4, 20 meter
    1 ISE2 port3/cond6/temp
  • $585.00 $555.75
  • 6051030-30Cable for Professional Plus4, 30 meter
    1 ISE2 port3/cond6/temp
  • $710.00 $674.50
  • 6052030-1Cable for Professional Plus, 1 meter
    DO port5/cond6/temp
  • $625.00 $593.75
  • 6052030-4Cable for Professional Plus4, 4 meter
    DO port5/cond6/temp
  • $640.00 $608.00
  • 6052030-10Cable for Professional Plus4, 10 meter
    DO port5/cond6/temp
  • $690.00 $655.50
  • 6052030-20Cable for Professional Plus4, 20 meter
    DO port5/cond6/temp
  • $745.00 $707.75
  • 6052030-30Cable for Professional Plus4, 30 meter
    DO port5/cond6/temp
  • $845.00 $802.75
  • 605790-1Quatro cable for Professional Plus, 1 meter
    2 ISE2 ports78/DO port5/cond6/temp
  • $1,355.00 $1,287.25
  • 605790-4Quatro cable for Professional Plus4, 4 meter
    2 ISE2 ports78/DO port5/cond6/temp
  • $1,390.00 $1,320.50
  • 605790-10Quatro cable for Professional Plus4, 10 meter
    2 ISE2 ports78/DO port5/cond6/temp
  • $1,450.00 $1,377.50
  • 605790-20Quatro cable for Professional Plus4, 20 meter
    2 ISE2 ports78/DO port5/cond6/temp
  • $1,560.00 $1,482.00
  • 605790-30Quatro cable for Professional Plus4, 30 meter
    2 ISE2 ports78/DO port5/cond6/temp
  • $1,695.00 $1,610.25
  • 605107Cable for Professional Plus, 1 meter
    pH/temp probe1 included, lab grade
  • $190.00 $180.50
  • 605177Cable for Professional Plus, 4 meter
    pH/temp probe1 included, lab grade
  • $200.00 $190.00
  • 605108Cable for Professional Plus, 1 meter
    ORP/temp probe1 included, lab grade
  • $200.00 $190.00
  • 605178Cable for Professional Plus, 4 meter
    ORP/temp probe1 included, lab grade
  • $240.00 $228.00
  • 605109Cable for Professional Plus, 1 meter
    pH/ORP/temp probe1 included, lab grade
  • $305.00 $289.75
  • 605179Cable for Professional Plus, 4 meter
    pH/ORP/temp probe1 included, lab grade
  • $325.00 $308.75
  • 605780Cable for Professional Plus, 1 meter
    ProBOD self stirring BOD probe included, 115 VAC
  • $710.00 $674.50

YSI Professional Plus Probes

  • Part Number/Description
  • Price
  • 605202DO probe15 for Professional Plus, galvanic
  • $185.00 $175.75
  • 605203DO probe16 for Professional Plus, Polarographic
  • $185.00 $175.75
  • 605101pH probe2 for Professional Plus
  • $175.00 $166.25
  • 605102ORP probe2 for Professional Plus
  • $205.00 $194.75
  • 605103pH/ORP probe23 for Professional Plus
  • $295.00 $280.25
  • 605104Ammonium probe24 for Professional Plus
  • $365.00 $346.75
  • 605105Chloride probe24 for Professional Plus
  • $365.00 $346.75
  • 605106Nitrate probe24 for Professional Plus
  • $365.00 $346.75

YSI Professional Plus Replacement DO Probe Membranes

  • Part Number/Description
  • Price
  • 605913Replacement membranes1 for Professional Plus galvanic probe
    Yellow cap 1.25 Mil Polyethylene
  • $60.00 $57.00
  • 605912Replacement membranes1 for Professional Plus galvanic probe
    Black cap 1.00 Mil Teflon
  • $60.00 $57.00
  • 605914Replacement membranes1 for Professional Plus galvanic probe
    Blue cap 2.00 Mil Polyethylene
  • $60.00 $57.00
  • 605306Replacement membranes1 for Professional Plus polarographic probe
    Yellow cap 1.25 Mil Polyethylene
  • $60.00 $57.00
  • 059880Replacement membranes1 for Professional Plus polarographic probe
    Black cap 1.00 Mil Teflon
  • $60.00 $57.00
  • 605307Replacement membranes1 for Professional Plus polarographic probe
    Blue cap 2.00 Mil Polyethylene
  • $60.00 $57.00

YSI Professional Plus Calibration Solutions

Our entire line of calibration solutions are available in the field supplies section

  • Part Number/Description
  • Price
  • PH-COMBO-PKEQUIPCO pH solution for Professional Plus
    6 individual 500 mL bottles, 2 each of pH 4, 7, and 10
  • $60.00 $57.00
  • 603824YSI pH solution for Professional Plus
    6 individual 1 pint (~473 mL) bottles, 2 each of pH 4, 7, and 10
  • $80.00 $76.00
  • 003821YSI pH solution for Professional Plus
    6 individual 1 pint (~473 mL) bottles,pH 4
  • $80.00 $76.00
  • 003822YSI pH solution for Professional Plus
    6 individual 1 pint (~473 mL) bottles,pH 7
  • $80.00 $76.00
  • 003823YSI pH solution for Professional Plus
    6 individual 1 pint (~473 mL) bottles,pH 10
  • $80.00 $76.00
  • COND-1K-500MLEQUIPCO conductivity solution for Professional Plus
    500 mL bottle, 1000 µS
  • $16.00 $15.20
  • COND-10K-500MLEQUIPCO conductivity solution for Professional Plus
    500 mL bottle, 10,000 µS
  • $16.00 $15.20
  • 065270YSI conductivity solution for Professional Plus
    1 quart (~946 mL), 1000 µS
  • $72.00 $68.40
  • 065272YSI conductivity solution for Professional Plus
    1 quart (~946 mL), 10000 µS
  • $72.00 $68.40
  • 065274YSI conductivity solution for Professional Plus
    1 quart (~946 mL), 100000 µS
  • $72.00 $68.40
  • 060907YSI conductivity solution for Professional Plus
    8 individual 1 pint (~473 mL) bottles, 1000 µS
  • $124.00 $117.80
  • 060911YSI conductivity solution for Professional Plus
    8 individual 1 pint (~473 mL) bottles, 10000 µS
  • $124.00 $117.80
  • 060660YSI conductivity solution for Professional Plus
    8 individual 1 pint (~473 mL) bottles, 50000 µS
  • $124.00 $117.80
  • ORP-500MLEQUIPCO ORP solution for Professional Plus
    500 mL bottle, Zobell solution
  • $95.00 $90.25
  • 061320YSI ORP solution for Professional Plus
    125 mL bottle, Zobell solution
  • $33.00 $31.35
  • 005580YSI confidence solution for Professional Plus
    6 individual 1 pint (~473 mL) bottles
  • $104.00 $98.80
  • 003841YSI Ammonium solution for Professional Plus
    500 mL bottle, 1 mg/l
  • $83.00 $78.85
  • 003842YSI Ammonium solution for Professional Plus
    500 mL bottle, 10 mg/l
  • $83.00 $78.85
  • 003843YSI Ammonium solution for Professional Plus
    500 mL bottle, 100 mg/l
  • $83.00 $78.85
  • 003885YSI Nitrate solution for Professional Plus
    500 mL bottle, 1 mg/l
  • $83.00 $78.85
  • 003886YSI Nitrate solution for Professional Plus
    500 mL bottle, 10 mg/l
  • $83.00 $78.85
  • 003887YSI Nitrate solution for Professional Plus
    500 mL bottle, 100 mg/l
  • $83.00 $78.85

YSI Professional Plus Accessories

  • Part Number/Description
  • Price
  • 603059Flow cell for Professional plus, 11 or 2 port, standard
  • $335.00 $318.25
  • 603076Flow cell for Professional plus, 11 or 2 port, extended length
  • $350.00 $332.50
  • 603077Flow cell for Professional plus with 1 port adapter, 1 or 2 port, standard
  • $380.00 $361.00
  • 606850Flow cell for Professional plus with Quatro cables
  • $380.00 $361.00
  • 603078Flow cell 1 port adapter for Professional Plus
  • $97.00 $92.15
  • 603056Flow cell mounting spike for Professional Plus
  • $30.00 $28.50
  • 603075Carrying case for Professional Plus, soft sided
  • $125.00 $118.75
  • 603074Carrying case for Professional Plus, hard sided
  • $290.00 $275.50
  • 603070Shoulder strap for Professional Plus
  • $31.00 $29.45
  • 603069Belt clip for Professional Plus
  • $28.00 $26.60
  • 063517Ultra clamp2 for Professional Plus
  • $25.00 $23.75
  • 063507Tripod3 for Professional Plus
  • $30.00 $28.50
  • 626444Lab dock4 for Professional Plus
  • $46.00 $43.70
  • 605170Electrode stand5 for professional Plus
  • $97.00 $92.15
  • 625120BOD analyst pro software for Professional Plus
  • $595.00 $565.25
  • 605978Cable weight for Professional Plus, 4.9 oz
  • $27.00 $25.65
  • 063019Cable weight for Professional Plus, 3″, 24 oz
  • $155.00 $147.25
  • 063020Cable weight for Professional Plus, 6″, 51 oz
  • $190.00 $180.50

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