ProDSS

YSI ProDSS Digital Sampling System Water Quality Meter

The YSI ProDSS (digital sampling system) handheld multiparameter meter provides extreme flexibility for the measurement of a variety of combinations for dissolved oxygen, turbidity, conductivity, specific conductance, salinity, resistivity, total dissolved solids (TDS), pH, ORP, pH/ORP combination, ammonium (ammonia), nitrate, chloride and temperature along with depth.

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SKU626870-1


Handheld Multiparameter Instrument with Digital Sensors

The YSI ProDSS (digital sampling system) handheld multiparameter meter provides extreme flexibility for the measurement of dissolved oxygen, turbidity, pH, ORP, conductivity, specific conductance, salinity, total dissolved solids (TDS), resistivity, seawater density, total suspended solids (TSS), depth, GPS coordinates, ammonium (ammonia), chloride, nitrate, temperature, and barometric pressure.

Some sensors are EPA approved for drinking water and wastewater compliance reporting.

Instrument Only.  Cables, probes/sensors, and accessories sold separately.

  • Overview

    I really think you're hitting a home run with this instrument
    I have to say that I am increasingly impressed with every feature of the unit.
    For spot sampling and profiling this is an excellent multiparameter instrument. The size and functionality knocks it out of the park for this kind of work compared to more cumbersome instruments.

    What are they all talking about? The new YSI ProDSS - digital sampling system

    The YSI ProDSS (digital sampling system) is a portable water quality multiparameter instrument for the measurement of several critical parameters - dissolved oxygen (optical), turbidity, pH, ORP, conductivity, specific conductance, salinity, TDS, resistivity, TSS, ammonium, ammonia, chloride, nitrate, depth (optional), temperature and GPS coordinates.

    Designed for use in applications such as surface water, groundwater, coastal/estuarine, aquaculture, and wastewater, the rugged and reliable ProDSS allows for the measurement of water quality parameters with digital sensors. The ProDSS uses smart sensor technology that allows sensors to be automatically recognized by the handheld while retaining calibration data.

    An easy-to-read backlit color display, large memory capacity, simple calibration procedures, rechargeable battery and powerful data management program (KorDSS) all help to make your sampling experience more convenient.

    The optional GPS and depth along with a wide range of cables and sensors (sold separately) allows for complete customization of the ProDSS. Military spec connectors, IP-67 waterproof rating, rubber over-molded case and 1-meter drop tests ensures durability to provide years of sampling even in the harshest field conditions.

    Parameters Available:

    • Dissolved Oxygen (optical)
    • Turbidity
    • pH
    • ORP/Redox
    • Conductivity
    • Specific Conductance
    • Salinity
    • Total Dissolved Solids (TDS)
    • Resistivity
    • Seawater Density
    • Total Suspended Solids (TSS)
    • Depth
    • GPS Coordinates
    • Ammonium
    • Ammonia
    • Chloride
    • Nitrate
    • Temperature
    • Barometric Pressure

    There are multiple features of the ProDSS:

    • Single cable design with lengths up to 100 meters
    • User-replaceable cables provide versatility, reduce down time and reduce overall cost of ownership
    • 4 port cables feature user-replaceable sensors; universal ports can accept any 4 sensors; optional depth sensor available (with depth and no depth)
    • ODO/CT probe and cable assemblies feature integral (built-in) optical DO and conductivity sensors; rugged ODO sensor cap with 2-year warranty is pre-installed on new assemblies
    • Long-life rechargeable lithium-ion battery to power handheld and sensors
    • Color display and backlit keypad; menu-driven operation
    • Digital smart sensors are automatically recognized by the instrument and store calibration data
    • Large memory (>100,000 data sets) with extensive site list and Data ID tag capabilities
    • KorDSS software (included) and USB on-the-go connector assist with data management
    • Global positioning system (GPS) (optional)
    • Rugged, waterproof case (IP-67 rated) with rubber over-mold and metal, military-spec (MS) cable connectors as well as rugged titanium sensors
    • Multiple languages: English, Spanish, Portuguese, French, German, Italian, Japanese, Norwegian, Chinese (simplified and traditional), Korean, and Thai
    • 3 year instrument warranty; 2 year cable warranty (sensor warranties vary)

    Not only have we answered our customers demands for a handheld instrument that can measure turbidity, the ProDSS can also measure depth (optional) in addition to pH, ORP, optical DO, conductivity, and GPS coordinates (optional).

    There are many options when "building" a ProDSS instrument. In addition to the ProDSS 4 port cable and the ODO/CT probe and cable assembly, the ProDSS will also work with YSI ProODO sensor/cable assemblies to provide a DO only instrument. It's also capable of using the ProOBOD optical BOD probe for use in the lab for BOD measurements.

    The ProDSS is a true field instrument. The titanium smart sensors (4 port cables) can easily be replaced in the field and our durable MS (Military Spec) locking bayonet-style cable connector ensures quick cable connection. A rugged and waterproof (IP-67) rubber over-molded instrument casing provides protection from the demands of field sampling.

    Cables and sensors are sold separately.

    Note: A conductivity/temperature sensor (626902) must be installed in a ProDSS 4 port cable for accurate temperature compensation and measurement of all parameters except turbidity and TSS.

    All ProDSS instruments include a rechargeable lithium-ion battery (pre-installed), hand strap, USB cable for charging the ProDSS battery and for connection to a PC, universal AC charger, cable for connection to a USB memory stick, ProDSS quick start guide, and USB memory stick containing KorDSS software and a digital copy of the user manual.

  • Specifications
    Benchtop Yes
    Buffer Recognition Yes
    Certifications RoHS, 1-meter drop test, Assembled in USA, WEEE, FCC, CE, IP-67, UN Part III Section 38.3 test methods for lithium-ion batteries (class 9)
    Connectivity / Communications Built-in micro USB port
    Connector MS (military spec) waterproof with quarter-turn bayonet lock (unsurpassed in regards to durability)
    Data Management KorDSS desktop PC software (included), >100,000 data sets
    Desktop Software Compatible KorDSS desktop PC software (included)
    Digital / Digital Sensors Yes
    Flow Cell flow cell is available, Yes
    GLP Compliance Yes, detailed GLP information is stored and is available to view, download or print
    GPS Optional internal GPS, coordinates are stored with measurement data and site lists
    Graphic Display backlit keypad, Color, LCD graphic display
    Languages Norwegian, Italian, Portuguese, Japanese, English, Spanish, German, French, Chinese (Simplified & Traditional)
    Logging Capabilities Single point or Continuous, Yes
    Measurement Method / Channels Digital
    Memory >100,000 data sets, 400 GLP files
    Multiparameter Yes
    Operating Temperature 0 to 50°C (32 to 122°F)
    Parameters Measured Dissolved Oxygen (%), Dissolved Oxygen (mg/L), Temperature, Turbidity, Conductivity, Specific Conductance, Resistivity, Salinity, Water Density, pH, ORP, Ammonium, Nitrate, Chloride, Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Depth, Barometer
    Power Rechargeable lithium-ion battery pack providing ~48 hours of battery life (instrument only with backlight off)
    Sampling Yes
    Security / Password Protection / UserID Yes
    Size

    Instrument: 8.3 cm width x 21.6 cm length x 5.6 cm depth (3.27 in x 8.5 in x 2.21 in)
    Bulkhead with sensors, without depth (no guard): 33.3 cm (13.11 in) length - the length with the ISE sensors is 34.04 cm (13.4 in)
    Bulkhead with sensors, with depth (no guard): 35.84 cm (14.11 in) length - the length with the ISE sensors is 36.58 cm (14.4 in)
    Bulkhead with guard, without depth: 42.82 cm (16.86 in) length and 4.75 cm (1.87 in) outer diameter
    Bulkhead with guard, with depth: 45.36 cm (17.86 in) length and 4.75 cm (1.87 in) outer diameter

    Smart Sensors / Ports 4 universal sensor ports on each cable, can accept any ProDSS sensor, Yes
    Storage Temperature 0 to 45°C (32 to 113°F) with battery installed0 to 60°C (32 to 140°F) without battery installed
    User Calibratable Yes
    User Replaceable Yes
    Warranty 3-year instrument; 2-year bulkhead, cable assembly, and sensors; 1-year pH and pH/ORP sensor modules, ODO (opticalDO) sensor caps, and Li-Ion battery pack; 6-months ammonium, nitrate, and chloride sensor modules
    Waterproof floats, IP-67 (even with the battery cover off)

    ProDSS Instrument General Specifications

    Specification  
    Barometer Built-in barometer
    Certifications RoHS, CE, WEEE, FCC, IP-67, 1-meter drop test, UN Part III Section 38.3 test methods for lithium-ion batteries (class 9), Assembled in USA
    Connectivity Built-in micro USB port
    Connector MS (military spec) waterproof with quarter-turn bayonet lock (unsurpassed in regards to durability)
    Data Management

    KorDSS desktop PC software (included)

    Data Memory >100,000 data sets; 400 GLP files
    Dimensions 8.3 cm width x 21.6 cm length x 5.6 cm depth (3.25 in x 8.5 in x 2.21 in)
    Display Color, LCD graphic display; backlit keypad
    Cables With or without depth sensors in lengths of 1, 4, 10, 20, 30, 40, 50, 60, 70, 80, 90 and100-meters; 10, 20 and 30-meter cables include a cable management kit; all cables 10-meters and longer include a 1 lb weight
    Flow Cell Yes; flow cell is available
    GLP Compliance Yes; detailed GLP information is stored and is available to view, download or print
    Languages English, Spanish, German, French, Italian, Norwegian, Portuguese, Japanese, Chinese (Simplified & Traditional)
    Logging Modes Single point or Continuous
    Operating Temperature 0 to 50°C (32 to 122°F)
    Power Rechargeable lithium-ion battery pack providing ~48 hours of battery life (instrument only with backlight off)
    Storage Temperature 0 to 45°C (32 to 113°F) with battery installed
    0 to 60°C (32 to 140°F) without battery installed
    Sites and Data ID 100 user-defined sites and 100 user-defined data ID tags
    Warranty 3-year instrument; 2-year bulkhead, cable assembly, and sensors; 1-year pH and pH/ORP sensor modules, ODO (opticalDO) sensor caps, and Li-Ion battery pack; 6-months ammonium, nitrate, and chloride sensor modules
    Waterproof IP-67 (even with the battery cover off); floats
    Meter Weight with Batteries 567 grams (1.25 lbs)
    Bulkead Weight with 4 Sensors 680 grams (1.5 lbs) with sensor guard on; 589 grams (1.3 lbs) without sensor guard
    GPS Optional internal GPS; coordinates are stored with measurement data and site lists
    Sensor Ports 4 universal sensor ports on each cable; can accept any ProDSS sensor

     

    ProDSS System Specifications (Instrument, Cables & Sensors)

    Parameter
    (units)
    Sensor Type Range Accuracy Resolution Calibration Maximum Depth
    Dissolved Oxygen
    (% saturation)
    Optical Luminescence - Lifetime Method 0 to 500% 0 to 200% (±1% of reading or 1% air saturation, whichever is greater)
    200% to 500% (±8% of reading)
    0.1% or 1% air saturation (user selectable) 1 or 2 points 100 m
    Dissolved Oxygen (mg/L, ppm)
    temp comp range -5 to 50°C
    Optical Luminescence - Lifetime Method 0 to 50 mg/L 0 to 20 mg/L
    (±0.1 mg/L or 1% of reading, whichever is greater)
    20 – 50 mg/L (±8% of reading)
    0.1 or 0.01 mg/L (user selectable) 1 or 2 points (user selectable) 100 m
    Temperature
    (°C, °F, K)
    Thermistor; Combination Sensor with Conductivity -5 to 70°C (23 to 158°F) ±0.2°C 0.1°C or 0.1°F (user selectable) None 100 m
    Turbidity
    (FNU, NTU)
    Nephelometric - Optical, 90° Scatter 0 to 4000 FNU 0 to 999 (0.3 or ±2% of reading, whichever is greater)
    1000 to 4000 (±5% of reading)
    0.1 FNU 1, 2, or 3 points (user selectable) -
    Conductivity*
    (µS, mS)
    Four Nickel Electrode Cell 0 to 200 mS/cm 0 to 100 mS/cm (±0.5% of reading or 0.001 mS/cm, whichever is greater)
    100 to 200 mS/cm (±1% of reading)
    0.001, 0.01 or 0.1 µS/cm (range dependent) 1 point 100 m
    Specific Conductance
    (µS, mS)
    Calculated from Conductivity and Temperature 0 to 200 mS/cm ±0.5% of reading or 0.001 mS/cm, whichever is greater 0.001, 0.01, 0.1 mS/cm 1 point -
    Resistivity
    (ohm-cm, kohm-cm, Mohm-cm)
    Calculated from Conductivity and Temperature 0 to 2 Mohms ±0.1% Full Scale 0.001, 0.01, 0.1 ohms - -
    Salinity
    (ppt, PSU)
    Calculated from Conductivity and Temperature 0 to 70 ppt ±1.0% of reading or ±0.1 ppt, whichever is greater 0.01 ppt 1 point -
    Water Density
    (Sigma, Sigma T)
    Sigma is Calculated from Salinity, Temperature, and Pressure
    Sigma T is Calculated from Salinity and Temperature
    0.0 to 50.0 sigma, sigma T - 0.1 sigma or sigma T - -
    pH
    (mV, pH units)
    Glass Bulb Combination Electrode; Ag/AgCl Reference Gel 0 to 14 units ±0.2 units 0.01 units 1, 2, or 3 points (user selectable) 100 m
    ORP
    (mV)
    Platinum Button; Ag/AgCl Reference --1999 to +1999 mV ±20 mV 0.1 mV 1 point 100 m
    Ammonium**
    (NH4-N mg/L, NH4-N mV)
    ammonia with pH sensor
    Ion Selective Electrode 0 to 200 mg/L NH4-N ±10% of reading or 2 mg/L, whichever is greater 0.01 mg/L 1, 2, or 3 point
    (user selectable)
    20 m
    Ammonia***
    (NH3-N mg/L)
    Calculated from Ammonium, Temperature, Salinity and pH 0 to 200 mg/L NH4-N - 0.01 mg/L - -
    Nitrate**
    (NO3-N mg/L, NO3-N mV)
    Ion Selective Electrode 0 to 200 mg/L NO3-N ±10% of reading or 2 mg/L, whichever is greater 0.01 mg/L 1, 2, or 3 point
    (user selectable)
    20 m
    Chloride** Ion Selective Electrode 0 to 18000 mg/L Cl ±15% of reading or 5 mg/L, whichever is greater 0.01 mg/L 1, 2, or 3 point
    (user selectable)
    20 m
    Total Dissolved Solids (TDS)
    (mg/L, kg/L, g/L)
    Calculated from Conductivity and Temperature 0 to 100 g/L User-Selectable TDS Multiplier (0.30 to 1.00; 0.65 default) 0.001, 0.01, 0.1g/L - -
    Total Suspended Solids (TSS)
    (mg/L)
    Correlated from Turbidity Field Measurements and Lab TSS Measurements from Grab Samples 0 to 30000 mg/L Calculated from Turbidity and User-Entered Correlation Points 0.01, 0.1 mg/L - -
    Depth
    (m, ft)
    Pressure Transducer 0 to 100 m (0 to 328 ft) ±0.004 m (±0.013 ft) for 1, 4 and 10-m cables
    ±0.04 m (±0.13 ft) for cables 20-m and longer
    0.001 m or 0.01 ft 1 point -
    Barometer
    (mmHg, inHg, mbar, psi, kPa, ATM)
    Piezoresistive 375 to 825 mmHg ±1.5 mmHg from 0 to 50°C 0.1 mmHg 1 point -

    * Derived parameters can include resistivity, salinity, specific conductance, and total dissolved solids
    **ISE sensors for freshwater only; 20-meter maximum depth
    *** Ammonia calculated from ammonium, temp, salinity, and pH

  • Accessories

    ProDSS 4 port Cable Assembly, With Depth

    4 port ProDSS cable with depth sensor

    ProDSS 4 Port Cable Assembly, No Depth

    4 port ProDSS cable without depth sensor

    ProDSS ODO Optical Dissolved Oxygen Sensor

    Titanium user-replaceable digital smart sensor

    ProDSS Turbidity Sensor

    ProDSS Turbidity Sensor

    ProDSS Conductivity and Temperature Sensor

    ProDSS Conductivity and Temperature Sensor

    ProDSS pH Sensor with Module

    ProDSS pH Sensor with Module

    ProDSS pH/ORP Sensor with Module

    ProDSS pH/ORP Sensor with Module

    ProDSS Nitrate Sensor with Module

    ProDSS Nitrate Sensor with Module

    ProDSS Ammonium Sensor with Module

    ProDSS Ammonium Sensor with Module

    ProDSS Chloride Sensor with Module

    ProDSS Chloride Sensor with Module

    Conductivity Calibrator Solution

    Conductivity Calibrator Solution

    pH Buffer

    pH Buffer

    Zobell Solution, ORP Calibrator

    Zobell Solution, ORP Calibrator

    Turbidity Standard

    Turbidity Standard

    Ammonium Standard

    Ammonium Calibration Solution

    Nitrate Standard

    Nitrate Standard

    5580 Confidence Solution (case of 6 pints)

    5580 Confidence Solution (case of 6 pints)

    ProDSS Large, Hard Sided Carrying Case

    ProDSS Large, Hard Sided Carrying Case

    Pro Series Soft Sided Carrying Case

    Carrying Case, Soft Sided

    ProDSS Small, Hard-sided Carrying Case

    ProDSS Small, Hard-sided Carrying Case

    Flow Cell Mounting Spike

    Flow Cell Mounting Spike

    Tripod Clamp

    Tripod Clamp

    Ultra Clamp

    Ultra Clamp

    Shoulder Strap

    Shoulder Strap

    Belt Clip

    Belt Clip

    ProDSS Car Charger Adapter, USB, 12VDC

    ProDSS Car charger adapter, USB, 12VDC

    ProDSS External Li-Ion Rechargeable Battery Pack, small

    ProDSS External Li-Ion Rechargeable Battery Pack, small

    ProDSS External Li-Ion Rechargeable Battery Pack, large

    ProDSS External Li-Ion Rechargeable Battery Pack, large

    ProDSS Replacement Battery Kit

    ProDSS Replacement Battery Kit

    ProDSS USB cable, 6 ft

    USB cable, 6 ft

    ProDSS USB cable, 6 in

    USB cable, 6 in

    Cable Management Kit

    Cable Management Kit

    Weight, Probe/Cable, 4.9 oz

    Weight, Probe/Cable, 4.9 oz

    Replacement ProDSS ODO Sensor Cap

    Replacement ProDSS ODO Sensor Cap

    Replacement ProDSS pH Module

    Replacement ProDSS pH Module

    Replacement DSS pH/ORP Module

    Replacement DSS pH/ORP Module

    Replacement ProDSS Nitrate Module

    Replacement ProDSS Nitrate Module

    Replacement ProDSS Ammonium Module

    Replacement ProDSS Ammonium Module

    Replacement ProDSS Chloride Module

    Replacement ProDSS Chloride Module

    ProDSS ODO/CT Field Cable

    Integral Optical DO and Conductivity Cable Assembly

  • How to Order

    Step 1: Order Instrument

    SKU Description
    626870-1 Instrument without GPS; includes rechargeable lithium-ion battery (pre-installed), hand strap, USB cable, universal AC adapter, micro USB to USB adapter cable, ProDSS quick start guide, and USB memory stick containing KorDSS software and digital copy of the entire manual
    626870-2 Instrument with GPS; includes rechargeable lithium-ion battery (pre-installed), hand strap, USB cable, universal AC adapter, micro USB to USB adapter cable, ProDSS quick start guide, and USB memory stick containing KorDSS software and digital copy of the entire manual

    Step 2: Order Cable(s)

    Cables do not include temperature sensor; all cables include 4 sensor ports and a maintenance kit (3 port plugs, tube of Krytox lubricant, brush for conductivity probe, syringe for depth sensor cleaning, and sensor installation/removal tool). All cables 10 meters and longer include a 1 lb weight. Cable lengths of 10 m, 20 m and 30 m include a cable management kit.

    SKU Description
    626909-1, -4, -10, -20, -30, -40, -50, -60, -70, -80, -90 or -100 m No depth sensor; Indicate cable length when ordering (Example: 626909-10 to indicate the 10-meter length)
    626910-1, -4, or -10 m Integrated Depth sensor; Indicate cable length when ordering (Example: 626910-4 to indicate the 4-meter length)
    626911-20, -30, -40, -50, -60, -70, -80, -90 or -100 m Depth sensor integrated; Indicate cable length when ordering (Example: 626911-50 to indicate the 50-meter length)

    Step 3: Order Digital, Smart Sensors

    A conductivity/temperature sensor must be installed in a ProDSS cable for accurate measurement of all parameters.

    SKU Description
    626900 Optical Dissolved Oxygen (ODO)
    626901 Turbidity
    626902 Combination Conductivity and Temperature sensor
    626903 pH with attached replaceable module
    626904 pH/ORP with attached replaceable module
    626905 Nitrate with attached replaceable module
    626906 Ammonium with attached replaceable module
    626907 Chloride with attached replaceable module

    Step 4: Order Standards and Solutions

    SKU Description
    065270 Conductivity calibrator, 1000 µmhos/cm (quart, glass); ideal for fresh water
    065272 Conductivity calibrator, 10000 µmhos/cm (quart, glass); ideal for brackish water
    065274 Conductivity calibrator, 100000 µmhos/cm (quart, glass); ideal for supersaturated sea water
    060907 Conductivity calibrator, 1000 µmhos/cm (8 each, pint, plastic); ideal for fresh water
    060906 Conductivity calibrator, 1413 µmhos/cm, ±1%, 0.01 M KCl (8 each, pint, plastic)
    060911 Conductivity calibrator, 10000 µmhos/cm (8 each, pint, plastic); ideal for brackish water
    060660 Conductivity calibrator, 50000 µmhos/cm (8 each, pint, plastic); ideal for sea water
    603824 pH buffers, 2 pints each of 4, 7, and 10 buffers (plastic)
    003821 pH buffer, 6 pints of 4 buffer (plastic); ideal for storage solution for pH sensor
    003822 pH buffer, 6 pints of 7 buffer (plastic)
    003823 pH buffer, 6 pints of 10 buffer (plastic)
    061320 ORP (mV) calibrator, Zobell solution, powder - needs hydrated (125 mL bottle)
    608000 Turbidity standard, 0 FNU (1 gallon, 3.78 l)
    607200 Turbidity standard, 12.4 FNU (1 gallon, 3.78 l)
    607300 Turbidity standard, 124 FNU (1 gallon, 3.78 l)
    607400 Turbidity standard, 1010 FNU (1 gallon, 3.78 l)
    003841 Ammonium standard, 1 mg/L (500 mL)
    003842 Ammonium standard, 10 mg/L (500 mL)
    003843 Ammonium standard, 100 mg/L (500 mL)
    003885 Nitrate standard, 1 mg/L (500 mL)
    003886 Nitrate standard, 10 mg/L (500 mL)
    003887 Nitrate standard, 100 mg/L (500 mL)
    005580 Confidence Solution to verify pH, ORP and conductivity data (not for calibration)

    Step 5: Order Accessories

    SKU Description
    626946 Large, hard sided carrying case
    603075 Large, soft-sided carrying case
    626945 Small, hard-sided carrying case (1- and 4-meter cables)
    599080 Flow cell
    603056 Flow cell mounting spike
    063507 Tripod (screws into back of meter)
    063517 Ultra clamp (screws into back of meter)
    603070 Shoulder strap
    603069 Belt clip (screws into back of meter)
    626942 USB car charger
    626943 Small external battery pack. Will typically recharge battery to ~50% when completely discharged.
    626944 Large external battery pack. Will typically recharge battery and charge second battery to ~20%.
    626940 AC charger (USA). Includes power supply and USB cable. (included with ProDSS meter)
    626941 AC charge (international). Includes power supply, USB cable and outllet adapters. (included with ProDSS meter)
    626846 Replacement Lithium-ion battery pack
    626969 ProDSS USB flash drive (included with ProDSS meter)
    626991 Cable for charging and PC connection (included as part of 626940 and 626941 and included with ProDSS meter)
    626992 Cable for connection to USB drive (included with ProDSS meter)
    626990 Cable maintenance kit; 3 port plugs, 1 Krytox tube, 1 brush, 1 syringe, 1 sensor install/removal tool, 6 o-rings (included with all cables)
    626919 Probe guard kit
    599786 Calibration/storage cup
    603062 Cable management kit (included with any cable 10, 20, or 30-meters long
    626918 1 lb weight (included with any cable 10-meters and longer)
    605978 4.9 oz weight
    626890 Replacement optical DO sensor cap
    626963 Replacement pH electrode module
    626964 Replacement pH/ORP electrode module
    626965 Replacement nitrate electrode module
    626966 Replacement ammonium electrode module
    626967 Replacement chloride electrode module
  • Video

    YSI ProDSS Digital Sampling System Water Quality Meter

    The YSI ProDSS (digital sampling system) handheld multiparameter meter provides extreme flexibility for the measurement of a variety of combinations for dissolved oxygen, turbidity, conductivity, specific conductance, salinity, resistivity, total dissolved solids (TDS), pH, ORP, pH/ORP combination, ammonium (ammonia), nitrate, chloride and temperature along with depth.

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