YSI

BOD Probe for YSI Pro20 and Professional Plus Meters

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115 V DO / Temp stirring BOD probe with 1 meter cable assembly. EPA approved...

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Cables for YSI Pro Series Multiparameter Meters

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The cables come with the sensor built right into the cable, so no need to...

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Cables for YSI Quatro Pro Series Samplers

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It is a 4-port cable designed for use with the ProQuatro and Pro Plus instruments....

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Conductivity and temperature probe for 556 YSI Multiparameter Meters

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The user-replaceable probe allows for replacement if necessary, without the need for any tools. It...

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Dissolved Oxygen Sensors for YSI Pro-Series Meters ²⁵

$ 224.20 USD

Sensors for Pro20, Pro20i, Pro1020, Pro2030 and Pro Plus instruments. easy to replace by the...

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Optical Probes for BOD YSI ProOBOD ²⁵

$ 1,421.25 USD

YSI ProDSS Smart Sensors – Maximum Precision in Water Quality Monitoring

Digital smart sensors for multiparameter environmental monitoring

The YSI ProDSS Smart Sensors provide accurate and reliable measurements of key water quality parameters. Each sensor is digital, stores its calibration, and is automatically recognized by the ProDSS instrument, ensuring efficiency and accuracy in both field and laboratory applications.

Key Features

• Smart Connectivity: Sensors are automatically recognized by the ProDSS instrument.
• Calibration Storage: Each sensor retains its internal calibration data.
• High Accuracy: Designed with the precision required for scientific studies and environmental monitoring.
• Wide Range of Parameters: Turbidity, dissolved oxygen, pH, ORP, nutrients, conductivity, temperature, and more.
• Freshwater and Saltwater Applications: Specific options for different environments.
• Direct Integration: Fully compatible with the YSI ProDSS multiparameter system.

• Specifications
• In the Box
• Required Items
• Optional Items

• Model	Sensor Type	Range	Accuracy	Resolution	Units
  ProDSS Turbidity	Nephelometric, optical 90°	0 – 4000 FNU	±2% up to 999 FNU; ±15% up to 4000 FNU	0.1 FNU	FNU, NTU
  ProDSS ODO	Optical dissolved oxygen (luminescence)	0 – 50 mg/L	±0.1 mg/L or 1% up to 20 mg/L; ±8% up to 50 mg/L	0.01 / 0.1 mg/L	mg/L, ppm
  ProDSS pH/ORP	Glass combination electrode + Platinum (ORP)	pH: 0 – 14; ORP: -1999 – +1999 mV	±0.2 pH; ±20 mV	0.01 pH; 0.1 mV	pH, mV
  ProDSS pH	Glass combination electrode	0 – 14 pH	±0.2 pH	0.01 pH	pH, pH mV
  ProDSS Nitrate	ISE Electrode (freshwater)	0 – 200 mg/L NO3-N	±10% or 2 mg/L	0.01 mg/L	mg/L, mV
  ProDSS Ammonium	ISE Electrode + pH (freshwater)	0 – 200 mg/L NH4-N	±10% or 2 mg/L	0.01 mg/L	mg/L, mV
  ProDSS Conductivity/Temp	4-electrode nickel cell + Thermistor	0 – 200 mS/cm; -5 – 70 °C	±0.5% up to 100 mS/cm; ±1% up to 200 mS/cm; ±0.2 °C	0.001 µS/cm; 0.1 °C	µS/cm, mS/cm, °C, °F, K
  ProDSS Chloride	ISE Electrode (freshwater)	0 – 18000 mg/L Cl	±15% or 5 mg/L	0.01 mg/L	mg/L, mV
  ProDSS Algae – Phycocyanin (TAL-PC)	Optical – chlorophyll and phycocyanin (freshwater)	Chlorophyll: 0 – 400 µg/L; Phycocyanin: 0 – 100 µg/L	r² ≥ 0.999	0.01 µg/L	µg/L, RFU
  ProDSS Algae – Phycoerythrin (TAL-PE)	Optical – chlorophyll and phycoerythrin (saltwater)	Chlorophyll: 0 – 400 µg/L; Phycoerythrin: 0 – 280 µg/L	r² ≥ 0.999	0.01 µg/L	µg/L, RFU

• • x1 YSI ProDSS Sensor (selected variant)
• • YSI ProDSS multiparameter instrument
• • Calibration solutions specific to each parameter

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ProDSS Hard-sided Carrying Cases ²⁵

$ 406.90 USD

A removable foam insert is pre-installed for smaller diameter cables such as the ProDSS ODO/CT...

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ProDSS Soft-sided Carrying Cases

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Pro Series Soft Sided Carrying Case A soft-sided carrying case ideal for all Pro Series...

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YSI Photometers - Discontinued

$ 1,120.00 USD

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YSI 9800 Photometers

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Simplify Your Water Quality Testing: YSI 9800 Portable Multiparameter Photometer

Reliable performance and accurate measurements in the lab or field, with a modern touch interface and durable IP67 design.

The YSI 9800 Photometer is a portable multiparameter instrument designed to quickly analyze over 30 water quality parameters in the field or laboratory. With an intuitive interface, color touchscreen, and rugged design, it’s ideal for professionals of any experience level. Compatible with a wide range of reagents (sold separately), the YSI 9800 replaces the previous YSI 9300 and 9500 models, offering a modern, precise, and sustainable approach to water monitoring.

Key Features:

• Multiparameter: Measures over 30 key water quality parameters.
• Intuitive interface: Color touchscreen with on-screen step-by-step instructions.
• Rugged design: IP67 certified, resistant to impact, scratches, and chemicals.
• Internal memory: Stores up to 1,000 data sets with traceability.
• USB connectivity: For data transfer and power supply.
• Multilingual: English, French, Spanish, and Simplified Chinese.
• Long-lasting: Performs up to 5,000 tests on a single set of batteries.
• Sustainable: Recycled carrying case and fully repairable throughout its service life.

Test Kit Table for YSI 9800 Photometer

Below are the available test kits for the YSI 9800, including measurement range, reference codes for starter kits (50 tests) and replacement kits (250 tests), as well as compatibility with seawater samples.

• Specifications
• In the Box
• Required Items
• Optional Items
• Documents

• Specification	YSI 9800 Photometer
  Instrument Type	Multiparameter Photometer
  Measured Parameters	Over 30 (Alkalinity, Ammonia, Chlorine, pH, Iron, Nitrates, etc.)
  Wavelengths	430 nm, 465 nm, 530 nm, 575 nm, 620 nm
  Accuracy	± 1%T (transmittance)
  Display	Large color LCD
  User Interface	Touchscreen with guided instructions
  IP Rating	IP-67 (submersible even with USB cable connected)
  Power Supply	6x AA batteries or USB power
  Connectivity	USB Type A to C for data transfer and charging
  Memory Capacity	1,000 data sets
  Battery Life	Up to 5,000 tests on one set of batteries
  Languages	English, French, Spanish, and Simplified Chinese
  Certifications	EN61326, EN61010, IP67, EN60068-2-78

• • x1 YSI 9800 Photometer
  • x1 Dilution tube
  • x1 10 mL Luer Slip Syringe
  • x1 Polishing cloth and absorbent cloth
  • x1 Test tube brush
  • x1 USB Type A to C cable
  • x10 Stirring rods
  • x10 Sample beakers
  • x1 Reagent storage box
  • x1 Quick start guide
• • Reagents for each parameter (sold separately)
• • YSI 9800 Carrying Case
  • Verification standards for YSI 9800
  • Round test beakers with lids (set of 5)
  • Additional USB Type A to C cable
• • User Manual (PDF)
  • Quick Start Guide (PDF)
  • Specification Sheet (PDF)

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YSI Cable Management Kit

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Cable Management Kit Easily manage your cables. Also attaches to the back of the instrument...

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YSI Maintenance Kit

$ 155.25 USD

Basic maintenance kit for all YSI 6-Series sondes except the 600R. Includes: 1 probe installation/removal...

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YSI Membrane Kit Includes Electrolyte ²⁵

$ 84.75 USD

Stretch membrane. Standard Membrane Kit for polarographic probes. Includes KCL electrolyte (1 mil).   Specifications...

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YSI pH Buffer Solution ²⁵

$ 108.75 USD

YSI pH Calibration Buffers – Accuracy and Confidence in Every Measurement

Ensure precise readings with solutions designed under the highest quality standards

YSI pH calibration buffer solutions are essential to ensure accuracy and repeatability in your pH measurements for scientific, environmental, and laboratory applications. Formulated under strict quality controls, these solutions allow calibration of the entire line of YSI sensors and meters, ensuring confidence in your results and meeting international standards.

Key Features

• Full Compatibility: Calibrates the entire range of YSI pH sensors and meters.
• Guaranteed Accuracy: Solutions formulated under rigorous quality control.
• Flexible Packaging: Available individually or in cases of pint-sized plastic bottles.
• Identifiable Colors: Each buffer is dyed with food-grade coloring for easy recognition.
• Long Shelf Life: With clear and reliable expiration dates.
• Laboratory Safety: Documented ingredients supported by Safety Data Sheets (SDS).
• Scientific Support: Used in environmental, agricultural, and quality control studies.
• International Quality: Designed and manufactured by YSI, a global leader in scientific instrumentation.

• Specifications
• In the Box
• Required Items
• Optional Items
• Documents

• Specification	YSI 3821 pH 4.00	YSI 3822 pH 7.00	YSI 3823 pH 10.00
  Identifier Color	Red	Yellow	Blue
  Main Ingredients	Potassium Acid Phthalate, Deionized Water	Potassium Phosphate Monobasic, Sodium Hydroxide, Deionized Water	Disodium EDTA, Potassium Carbonate, Potassium Borate, Potassium Hydroxide, Deionized Water
  Packaging	Plastic bottles (pint) or glass bottles (quart)
  Shelf Life (unopened)	2 years	2 years	2 years
  Shelf Life (opened)	6 months	6 months	6 months
  Main Use	Low acidity calibration	Neutral calibration	Basic/high alkalinity calibration

• • x1 YSI Buffer Solution pH 4.00 (3821)
  • x1 YSI Buffer Solution pH 7.00 (3822)
  • x1 YSI Buffer Solution pH 10.00 (3823)
• • Compatible YSI pH Meter
  • YSI pH Electrode
• • Additional YSI Solutions (Conductivity, Zobell, Turbidity, Ammonium, Nitrate, O₂ Electrolyte)
• • YSI pH 4 Calibration Buffer SDS
  • YSI pH 7 Calibration Buffer SDS
  • YSI pH 10 Calibration Buffer SDS
  • YSI Solution Expiration Dates

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YSI pH Meter Pro10

$ 688.25 USD

YSI Pro10: La Robustez Definitiva para Mediciones de pH y ORP en Campo

Instrumento portátil ultrarresistente con certificación IP67, conectores militares y sensores reemplazables. Ideal para mediciones precisas de pH/ORP y temperatura en las condiciones más extremas, con calibración inteligente y almacenamiento de datos.

Rugged and reliable, the YSI Pro10 provides everything you need in a handheld instrument for the measurement of either pH or ORP along with temperature.

User-replaceable sensors and cables along with convenient calibration routine feature makes it extremely user friendly. Mil-spec (military spec) connectors, IP67 waterproof and rubber over molded case, and 1-meter drop tests ensure the instrument remains in your hands to provide years of sampling even in the harshest field conditions. The feature set results in a low total cost of ownership over the life of the product and proves that it is smarter, tougher, and more versatile.

Key Features

• User-replaceable cables and sensors provide versatility, reduce down time and reduce overall cost of ownership.
• Available with 1- 4- 10- 20- and 30-m cable lengths standard (cable management kit included on all cables 4-m and longer).
• Smart calibration; the instrument remembers the previous calibration values and simply walks you through the routine.
• Stores 50 data sets; no need to write down data.
• Large graphic, backlit display and glow in the dark keypad. Usable in any lighting condition. The display is also visible when wearing polarized sunglasses.
• Tough. IP67, impact-resistant, waterproof case. Waterproof without the battery cover as well.
• Rubber over molded case provides extra durability. Military spec connectors are unsurpassed for ruggedness.
• Multiple languages include English, Spanish, French, and Portuguese.

Note: cables and sensors are sold separately

• Specifications
• In the Box
• Required Items
• Optional Items

EO20231804

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YSI pH/ORP/Temperature Meters EcoSense pH100 Series

$ 328.50 USD

The EcoSense® pH100 Seriess handheld instruments provides accurate and repeatable pH, mV, and temperature measurements...

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YSI Photometers Reagents

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Starter Reagent Kits for the 9300 and 9500 photometers. The kits include reagents for 50...

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YSI Pro Series Sensors

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References Description  Characteristics pH pH(ISE) PROBE Measure pH quickly and easily with the 1001 sensor....

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YSI Pro20 Dissolved Oxygen Meter

$ 570.00 USD

YSI Pro20: Dissolved Oxygen Accuracy, Even Under Extreme Conditions

Rugged, portable dissolved oxygen meter with replaceable sensors, fast calibration, and IP-67 military-grade design. Ideal for both the laboratory and field, offering reliable data with low operating costs.

The YSI Pro20 dissolved oxygen meter is a rugged, user-friendly instrument for dissolved oxygen measurement. The Pro20 can be used in the lab or the field and can go from one to the other in seconds.

User-replaceable sensors and cables and convenient One Touch Cal feature makes it extremely user friendly. Mil-spec (military spec) connectors, IP-67 waterproof and rubber over molded case, and 1-meter drop tests ensure the instrument remains in your hands to provide years of sampling even in the harshest field conditions. The feature set of the Pro20 results in a low total cost of ownership over the life of the product.

Fast response times with the Polarographic or Galvanic dissolved oxygen sensors allow you to complete your sampling routine quickly. The long life of the Polarographic sensor saves time and money and reduces your overall cost. The Galvanic sensor enables you to start sampling immediately without a warm-up period. Either sensor you choose for the field will give you accurate, quality data.

Instrument only. Cables, probes / sensors, and accessories are sold separately.

Key Features

• Internal barometer for highest accuracy.
• Choose field DO sensors (Polarographic or Galvanic) or lab BOD probe for BOD in wastewater.
• One Touch Cal calibrates within 3 seconds with the push of a button.
• Stores 50 data sets.
• Graphic, backlit display and glow in the dark keypad.
• Available with 1, 4, 10, 20, 30 or 100-meter cables.
• View display with polarized sunglasses on.
• Fastest response time on the market with 95% response in 8 seconds with standard membrane.
• Multiple languages include English, Spanish, French and German.
• User replaceable sensors and cables .

YSI Pro20, Dissolved Oxygen Meter, Portable, Rugged, Waterproof IP-67, Barometer, Polarographic Sensor, Galvanic Sensor, One Touch Cal, Field Use, Lab Use, Fast Response, BOD Probe, Replaceable Sensors, Data Storage, Long Battery Life, RoHS, CE Certified

• Specifications
• In the Box
• Required Items
• Optional Items
• Documents

(S 22/9/2021, S 20210415)

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YSI ProDSS 4 Port Cables Assembly

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Es un conjunto de cable de 4 puertos para el instrumento ProDSS disponible en longitudes de hasta 100 metros. Los puertos de sensor en los cables de 4 puertos ProDSS son universales, lo que permite la conexión de sensores ProDSS en cualquier puerto de sensor.

Conecta los sensores ópticos de OD, turbidez, conductividad / temperatura, pH, pH / ORP, nitrato, amonio y cloruro de ProDSS en cualquier combinación.

Nota: Se debe instalar un sensor de conductividad / temperatura en un cable de 4 puertos ProDSS para una compensación precisa de la temperatura y la medición de todos los parámetros, excepto la turbidez y el TSS. Todos los sensores, incluida la conductividad / temperatura, deben pedirse por separado. Los cables de 10, 20 y 30 metros incluyen un kit de administración de cables.

• Especificaciones
• En la Caja
• Artículos Requeridos
• Artículos Opcionales

• • 4 puertos de sensor.
  • Tapones de 3 puertos.
  • Tubo de lubricante Krytox.
  • Cepillo para sonda de conductividad.
  • Jeringa para limpieza del sensor de profundidad.
  • Herramienta de instalación / extracción del sensor.
• • Cables YSI Para Medidores ProDSS (1)
• • Medidores Multiparámetros de Calidad de Agua YSI ProDSS
  • Sensores para Medidor YSI ProDSS
• • Ninguno

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YSI ProDSS Flow Cell ²⁵

$ 439.75 USD

YSI 9080 Flow Cell – Precision in Groundwater Sampling

Optimize your monitoring with low-flow sampling and reliable results

The YSI 9080 Flow Cell is designed for low-flow groundwater sampling applications, in combination with ProDSS or EXO1 instruments. Its design enables controlled flow that improves data accuracy, ensuring representative measurements without altering water conditions. Ideal for researchers, environmental professionals, and water quality monitoring projects where reliability is essential.

Key Features

• Low-flow sampling: Designed to optimize representativeness in groundwater.
• Full compatibility: Works with YSI ProDSS and EXO1 sondes.
• 410 mL volume: Accurate capacity without sensors installed.
• Durable construction: Built to withstand demanding field conditions.
• Quick connections: Includes 3/8” and 1/4” adapters for fast, secure setup.
• Easy maintenance: Easily disassembled for cleaning and sensor care.
• Lubrication and sealing: Spare O-rings and lubricant included to ensure tight sealing.
• Vertical design: Allows efficient purging and prevents air bubbles in measurements.

• Specifications
• In the Box
• Required Items
• Optional Items
• Documents

• Specification	Value
  Model	YSI 9080 Flow Cell
  Volume	410 mL (without sensors installed)
  Maximum pressure	25 psi
  Operating temperature	-10 to 60 °C (14 to 140 °F)
  Storage temperature	-20 to 60 °C (-4 to 140 °F)
  Related part numbers	#599080, #599201

• • x1 Flow cell
  • x2 3/8" fittings
  • x2 1/4" fittings
  • x1 Tube of lubricant
  • x1 Instruction set
  • x2 Spare O-rings
• • YSI ProDSS or EXO1 sonde (required for operation)
• • EXO2 Flow Cell – 925 mL (#599201)
  • Spare O-rings (#606856 / #599215)
  • Replacement components (tube, caps, rings, quick fittings)
• • YSI 9080 Flow Cell Instruction Sheet

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YSI ProDSS Multiparameter Water Quality Meter ²⁵

$ 2,308.25 USD

ProDSS Digital System: Explore, Measure & Trust Your Water Quality Data

Scientific precision in your hands: measure multiple water parameters in the field and lab

The YSI ProDSS (Digital Sampling System) Multiparameter Handheld is a portable water sampling instrument that combines ruggedness, flexibility, and accuracy. Designed for scientific, environmental, and regulatory applications, it allows you to connect up to four smart sensors simultaneously, providing reliable data in surface water, groundwater, coastal water, aquaculture, laboratories, and wastewater. Its advanced digital technology automatically recognizes sensors and retains calibration, saving time and ensuring reproducible results. Available in two versions: with integrated GPS (to record field coordinates) or without GPS.

Key Features

• Total Flexibility: 4 universal ports to connect any combination of sensors.
• Extreme Durability: IP-67 waterproof housing, military-grade connectors, and replaceable titanium sensors.
• Extended Battery Life: rechargeable lithium-ion battery with up to 48 hours of continuous use.
• Large Memory: stores over 100,000 data sets with customizable labels.
• Clear Display: color LCD with backlit keypad, even in direct sunlight.
• Kor Software Compatible: advanced data analysis, calibration, and management on PC and mobile.
• Advanced Options: integrated GPS in the “With GPS” version and optional depth sensor.
• Reliable Support: up to 3-year warranty on the instrument and 2 years on cables.

• Specifications
• In the Box
• Required Items
• Optional Items
• Documents

• Specification	ProDSS Handheld (No GPS)	ProDSS Handheld (With GPS)
  Instrument Type	Portable digital multiparameter for water sampling (field and lab compatible)
  Sensor Ports	4 universal, compatible with any ProDSS sensor
  Internal GPS	No	Yes, stores coordinates with data and site lists
  Memory	>100,000 data logs, 400 GLP files
  Connectivity	Micro USB On-The-Go port for PC, charging, and USB memory connection
  Data Management	Kor Software (PC included and mobile app), data viewing and download
  Battery	Rechargeable lithium-ion (~48h autonomy without backlight)
  Display	Color LCD with backlit keypad
  Certifications	CE, FCC, RoHS, WEEE, IP-67, 1m drop test, UN 38.3, assembled in USA
  Languages	Spanish, English, Portuguese, German, French, Italian, Norwegian, Japanese, Chinese (Simplified and Traditional)
  Buffer Recognition	Automatic, compatible with USA (4.00, 7.00, 10.00) and NIST (4.01, 6.86, 9.18), temperature compensated
  Sensors	Digital, replaceable, up to 4 simultaneously
  GLP Compliance	Stores detailed GLP info, available for download/printing
  Data Logging	Single-point or continuous mode
  Measurable Parameters	DO (% and mg/L), Temp., Turbidity, Conductivity, Resistivity, Salinity, Density, pH, ORP, Ammonium, Nitrate, Chloride, TDS, TSS, Depth, Barometer
  Operating Temperature Range	0 to 50 °C (32–122 °F)
  Storage Temperature	0–45 °C with battery | 0–60 °C without battery
  Size (handheld)	8.3 cm (width) × 21.6 cm (length) × 5.6 cm (depth)
  Size (bulkhead)	With sensors: 33–36 cm | With guard: 42–45 cm | Ø 4.75 cm
  Protection	Waterproof, floats, IP-67 even with battery cover open

• • x1 ProDSS Handheld (selected version)
  • x1 Rechargeable lithium-ion battery (pre-installed)
  • x1 Hand strap
  • x1 USB cable for charging and PC connection
  • x1 Universal AC charger
  • x1 Cable for USB memory connection
  • x1 USB memory with Kor software
  • x1 ProDSS Quick Guide
  • x1 User manual in digital format
• • ProDSS 4 Port Cable Assembly (with or without depth sensor, depending on configuration)
  • ProDSS multiparameter sensors (ODO, pH, ORP, Turbidity, Algae, etc.)
  • Conductivity/Temperature Sensor (recommended for accurate compensation)
• • Depth sensor
  • ODO/CT Probe and cable
  • ProODO Sensor and cable
  • ProOBOD Optical BOD Probe (lab use)
  • ProDSS 4 Port Cable Assembly, With Depth – Cable with depth sensor
  • ProDSS 4 Port Cable Assembly, No Depth – Cable without depth sensor
  • ProDIGITAL ODO/CT Cable Assembly – Integrated optical DO and conductivity cable
  • ProDSS ODO Optical Dissolved Oxygen Sensor
  • ProDSS Turbidity Sensor
  • ProDSS Conductivity and Temperature Sensor
  • ProDSS pH Sensor with Module
  • ProDSS pH/ORP Sensor with Module
  • ProDSS Total Algae PC Sensor
  • ProDSS Large, Hard Sided Carrying Case
  • Pro Series Soft Sided Carrying Case
  • ProDSS Small, Hard-sided Carrying Case
• • ProDIGITAL User Manual (EN)
  • Dissolved Oxygen Solubility Table | XA00055
  • YSI ProDSS Quick Start Guide

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YSI ProDSS Smart Sensors ²⁵

$ 1,421.25 USD

YSI ProDSS – Total Precision in Water Quality

Measure multiple parameters with digital smart sensors and maximum reliability in the field

The YSI ProDSS meter offers an advanced solution for water quality analysis in the field and laboratory. Its digital titanium smart sensors, user-replaceable, are automatically recognized by the instrument and store calibration data, making them easy to use and reducing preparation time. In addition, its single-cable design with universal ports allows you to connect up to 4 sensors simultaneously plus depth measurement, providing versatility and lowering total cost of ownership.

Key Features

• Digital Smart Sensors: Automatic recognition and calibration storage.
• Rugged Titanium Construction: Superior resistance for demanding fieldwork.
• Modular and Replaceable: User-interchangeable cables and sensors for greater flexibility.
• Universal Port Design: Connect up to 4 sensors plus depth.
• High Accuracy: Full measurement range with resolutions suited for scientific research.
• Cost Reduction: Minimizes downtime and maintenance.
• Versatile Applications: Ideal for environmental monitoring, field studies, and aquatic research.
• Documentation Support: Includes online manuals and catalogs for ease of use.

• Specifications
• In the Box
• Required Items
• Optional Items
• Documents

• Ref	Accuracy	Measurement Range	Resolution
  Turbidity Sensor	0 to 999 FNU: ±0.3 FNU or ±2% reading 1000 to 4000 FNU: ±5% reading	0 to 4000 FNU	0.1 FNU
  pH/ORP Sensor	pH: ±0.2 units ORP: ±20 mV	pH: 0 to 14 units ORP: -1999 to 1999 mV	pH: 0.01 units ORP: 0.1 mV
  pH Sensor	±0.2 pH units	0 to 14 pH units	0.01 pH units
  Titanium Smart Sensor	0 to 200%: ±1% reading 200 to 500%: ±8% reading 0 to 20 mg/L: ±0.1 mg/L or ±1% reading 20 to 50 mg/L: ±8% reading	0 to 500% 0 to 50 mg/L	0.01–0.1 mg/L 0.1–1% (selectable)
  Nitrate Sensor	±10% reading or 2 mg/L	0 to 200 mg/L NO3-N	0.01 mg/L
  Conductivity and Temperature Sensor	Temp.: ±0.2°C Conductivity: depends on range Salinity: 0.01 ppt	Temp.: -5 to 70°C Conductivity: 0 to 200 mS/cm Salinity: 0 to 70 ppt	Temp.: 0.1°C/°F Conductivity: 0.001–0.1 µS/cm
  Ammonium Sensor	±10% reading or 2 mg/L	Ammonium: 0 to 200 mg/L NH4-N Ammonia: 0 to 200 mg/L NH3-N	Ammonium: 0.01 mg/L Ammonia: 0.01 mg/L
  Chloride Sensor	±15% reading or 5 mg/L	0 to 18000 mg/L Cl	0.01 mg/L

• • x1 Sensor for YSI ProDSS Meter
• • YSI ProDSS Multiparameter Water Quality Meter
  • YSI Cables for ProDSS
• • None
• • User Manual (English)
  • YSI Catalog (English)

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YSI ProDSS/EXO Replacement Battery Kit ²⁵

$ 161.90 USD

YSI ProDSS/EXO Replacement Battery Kit Kit de batería de repuesto para ProDSS & EXO de...

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YSI Professional Series Pro20i Dissolved Oxygen Instrument

$ 1,068.75 USD

Accuracy and Durability in the Field: YSI Pro20i Dissolved Oxygen Meter

With a rugged design, interchangeable sensors, and instant calibration, the YSI Pro20i is the ideal tool for reliable dissolved oxygen measurements in demanding conditions.

The YSI Pro20i is a portable meter for dissolved oxygen (DO) and temperature, designed to deliver accurate field measurements with a durable and easy-to-use interface. Unlike other models, the Pro20i features an integral (non-detachable) cable available in 1, 4, and 10 meter lengths. Users can choose between polarographic or galvanic DO sensors, both of which are user-replaceable, to meet various measurement needs. Its rubber over-molded housing, military-spec connectors, and backlit display make it ideal even in harsh environments.

Key Features

• One-step calibration: One Touch Cal function allows calibration in under 3 seconds.
• Integrated cable: Available in 1, 4, and 10-meter lengths, with interchangeable DO sensors.
• Built for the field: Waterproof (IP-67), drop-tested from 1 meter, with a non-slip rubber casing.
• Interchangeable sensors: Choice of polarographic (1-year warranty) or galvanic (6-month warranty) sensors.
• Internal barometer: Ensures greater DO measurement accuracy.
• Fast response: 95% response time in just 8 seconds with standard membrane.
• Outdoor-readable display: Graphic backlit display and glow-in-the-dark keypad, readable even with polarized sunglasses.
• Internal memory: Stores up to 50 data sets to ensure data integrity.
• Multilingual interface: Available in English, Spanish, French, and German.
• Long battery life: Up to 400 hours of operation with 2 C-cell batteries (without backlight).

• Specifications
• In the Box
• Required Items
• Optional Items
• Documents

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YSI ProSolo Optical Dissolved Oxygen/Temp Meters

$ 1,921.50 USD

The ODO/T probe assembly pairs with the ProSolo handheld to form a complete sampling system.

With integral digital sensors, the plug-and-play ODO/T minimizes the time spent setting up the instrument. Pro DIGITAL technology allows the handheld computer to automatically recognize connected sensors, so there is no need to tell the instrument that it is connected.

Optical dissolved oxygen (ODO) technology is non-consumptive, meaning that no oxygen is consumed during the measurement. Flow dependence is non-existent and agitation is not required, resulting in the most accurate DO measurements available from a probe. The ODO sensor is not susceptible to interference from other gases, shifts less and maintains calibration longer than membrane-covered sensors. Maintenance is very simple with a single optical cover that is good for at least two years.

ProSolo Handheld features an easy-to-read color display, large capacity memory, intuitive interface, rechargeable battery and powerful data management software (KorDSS) for a powerful and convenient sampling experience. Excellent for surface water, groundwater, coastal/estuarine, aquaculture and wastewater applications!

• Specifications
• In the box
• Required Items
• Optional Items
• Manuals

• Features
  Calibration	400 detailed calibration records can be stored and are available for viewing, downloading and printing.
  Certifications	CEC, CE; RoHS; IP-67; WEEE; FCC UN Part III, Section 38.3, Test Methods for Lithium-ion Batteries (Class 9)
  Data Management	100 user-defined sites and 100 user-defined data ID tags; site images can be sent to the handheld computer via KorDSS
  Monitor	Color, graphic LCD display; 1.5'' wide x 2.5'' high
  Idioms	English, Spanish, German, French, Italian, Norwegian, Norwegian, Portuguese, Japanese, Chinese (simplified and traditional), Korean, Thai.
  Registration Capabilities	Single or continuous point with auto-steady-state function
  Memory	> 100,000 data sets
  Operating Temperature	0 to 50 ° C (32 to 122 ° F)
  Power	Rechargeable lithium-ion battery provides ~ 48 hours with meter alone, battery recharge time is ~ 9 hours with AC power adapter; instrument can also be powered via AC or external power supply through USB port
  Dimensions	32.6'' x 85.0'' x 22.0''
  Storage Temperature	0 to 45 ° C (32 to 113 ° F) with battery installed; 0 to 60 ° C (32 to 140 ° F) without battery installed
  USB	Built-in On-The-Go micro USB port for PC connection, handheld computer recharging / powering and direct connection to a USB flash drive
  weight	567 grams with battery
• • Optical Meter (1)
  • Optical dissolved oxygen and temperature probe (1)
  • Case (1)
• • None
• • None
• • User Manual (English)
  • Technical Specifications Manual (English)

(ZC20220810)

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