Surface Water Quality Monitoring Equipment

Handheld and deployed water quality instruments for rivers, streams and outfalls: multiparameter sondes and handhelds, turbidity meters, automated samplers, and flow measurement gear. Spot check by hand or leave a sonde logging.

44 products
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Aqua TROLL 100 Data Logger
In-Situ Aqua TROLL 100 Data Logger
from $1,848.00
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OTT HydroMet logo
Sutron Constant Flow Bubbler
from $4,615.00
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OTT MF Pro sensor
OTT MF Pro on top-setting wading rod
OTT MF Pro Portable Flow Meter
from $7,087.00
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In-Situ Aqua TROLL 800
from $11,828.00
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In-Situ Aqua TROLL 700
from $9,833.00
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Aqua TROLL 600, Sonde Only
Aqua TROLL 600, Sonde Only Vertical
In-Situ Aqua TROLL 600
from $10,018.00
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Aqua TROLL 500, Sonde Only
Aqua TROLL 500 with Cable Attached
In-Situ Aqua TROLL 500
from $7,833.00
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YSI ProSwap Logger submersible monitoring sonde
YSI ProSwap Logger with topside power pack
YSI ProSwap Logger — External Power (No Battery)
from $2,850.00
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YSI ProSwap Logger submersible monitoring sonde
YSI ProSwap Logger with handheld communication
YSI ProSwap Logger — With Internal Li-ion Battery
from $3,088.00
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YSI ProSample PM-12 mini portable automated sampler open
YSI ProSample PM mini portable sampler field deployment
YSI ProSample Mini Portable Automated Sampler (PM / PM-12)
from $4,218.00
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YSI ProSample P, P-12, PM, PM-12 portable automated samplers
YSI ProSample portable sampler in field use
YSI ProSample Portable Automated Sampler (P / P-12)
from $4,123.00
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YSI ProSolo handheld optical dissolved oxygen meter
YSI ProSolo Handheld
from $1,075.00
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YSI ProSwap-1 digital water quality meter handheld
YSI ProSwap-1 Handheld
from $1,372.00
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YSI Pro20i dissolved oxygen meter with integral cable
YSI PRO Series 20i - Dissolved Oxygen Meter (Integral Cable Kit)
from $1,167.00
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YSI Pro2030 dissolved oxygen and conductivity handheld water quality meter
YSI PRO Series 2030 - Dissolved Oxygen, Conductivity Meter
from $1,110.00
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YSI Pro1020 dissolved oxygen and pH/ORP handheld water quality meter
YSI PRO Series 1020 - Dissolved Oxygen, pH/ORP Meter
from $1,110.00
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YSI Pro1030 pH/ORP and conductivity handheld water quality meter
YSI Pro1030 pH/ORP and conductivity handheld water quality meter
YSI PRO Series 1030 - pH/ORP, Conductivity Meter
from $1,111.00
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YSI Pro20 dissolved oxygen handheld water quality meter
YSI PRO Series 20 - Dissolved Oxygen Meter
$366.00 from $348.00 Save $18.00
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YSI ProDSS Multiparameter Water Quality Meter
$1,361.00 from $1,293.00 Save $68.00
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YSI Pro10 pH/ORP handheld water quality meter
YSI PRO Series 10 - Temp, pH or ORP Meter
$272.00 from $258.00 Save $14.00