Dissolved Oxygen Meters News

Introduction
Hanna Instruments HI-9146 Dissolved Oxygen Meter from WolfLabs.
The HI-9146 is a rugged, portable dissolved oxygen (DO) meter, delivering laboratory-grade accuracy in tough environments. Ideal for aquaculture, wastewater treatment, and environmental monitoring, it ensures reliable DO measurements in both field and lab settings.

Features & Benefits:
- Wide DO Range – Measures 0.00 to 45.00 mg/L and 0.0 to 300.0% saturation.
- Easy Calibration – One or two-point automatic calibration for accuracy.
- Smart Compensation – Auto temperature, altitude, and salinity adjustments.
- User-Friendly – Backlit LCD and auto-endpoint for stable readings.
- Field-Ready – Waterproof, durable casing with a 4m probe cable.

Introduction
Hanna Instruments HI6421 and HI6421P Dissolved Oxygen Meters from Wolflabs.
The HI6421 and HI6421P are benchtop meters with large touchscreens, designed for measuring dissolved oxygen in fresh and saltwater.
HI6421 uses Hanna’s optical DO probe (opdo), based on fluorescence quenching, where oxygen reduces luminescence intensity, measured to calculate DO concentration. It includes Smart Caps with preloaded calibration data, rugged construction, and compensation for sensor aging, ensuring long-term accuracy without frequent recalibration.
HI6421P features a slim, versatile polarographic probe with a built-in thermistor for temperature compensation, durable PTFE membrane caps, and fast, accurate readings unaffected by flow. Both models compensate for barometric pressure, temperature, and salinity for precise results.

Features and benefits
- 7-inch capacitive touch screen with multi-touch support
- Capacitive touch back, home and system menu keys
- User-friendly icons and symbols allow users to easily navigate and interpret the instrument functions
- Data log collection of at least 1,000,000 data points (with time and date stamp)

Introduction
Mettler Toledo FiveGo series of Dissolved Oxygen Meters from Wolflabs.
Time is an increasingly valuable asset. Thanks to the FiveGo’s intuitive operation, robust design and memory functions, you can maximize your time spent measuring instead of dealing with complex system and measurement setups.

Features and benefits
- A large display for easy viewing, the instruments’ intuitive button arrangement and simple menu ensure easy operations
- Portable and with an ergonomic design making it a comfortable experience
- The IP67 waterproof protection enables the FiveGo to withstand wet and demanding environments
- The sensors come with high quality membrane glass and well-established measurement technologies for trusted results

A new dissolved oxygen meter from Hanna Instrumens has been added to the website

New Seven2Go S4 and Seven2Go Pro dissolved oxygen meter kits from Mettler Toledo have been added to the website.

New Edge DO and HI series dissolved oxygen meters from Hanna Instruments have been added.

Introduction 
New LAQUAact OM-71-02 series dissolved oxygen meter from Horiba has been added.

Features and benefits
- The built-in data memory (1000 items)
- Connecting to a computer allows measurement data to be collected.
- Output to a GLP/GMP-compatible printer is possible.
- Temperature compensation, atmospheric pressure calibration, and salt concentration calibration functions
- Oxygen concentration and saturated oxygen concentration measurement functions
- Interval measurement function
- Sample ID No. setting function
- Clock function and auto power-off function
- Usable with AAA alkaline batteries, Ni-MH batteries, or adapter.
- IP67-compliant waterproof and dustproof structure.

Introduction
New FiveGo F4-Standard and FiveGo F4-Field series dissolved oxygen meters from Mettler Toledo have been added. Time is an ever more valuable asset. Thanks to the FiveGo's intuitive operation, robust design and extensive memory functions, you can maximize your time spent measuring instead of dealing with complex system and measurement setups. Ideally suited for mobile applications in the laboratory, at-line, or outdoors, the new FiveGo portable instruments provide high quality pH/mV, conductivity or dissolved oxygen measurements with the simple click of a button. The robust and waterproof design makes the FiveGo instruments the perfect companion to get reliable measurement data even in harsh conditions, all at a reasonable price.

Features and benefits
- Intuitive Operation: Featuring a large, well-structured display for easy viewing, the instruments' intuitive button arrangement and simple menu ensure measurements can be performed in just a few clicks.
- Ergonomic Design: Thanks to its ergonomic design, working with the FiveGo portables is a comfortable experience for both big and small hands. The foldable foot stand provides optimal viewing while situated on a lab bench.
- Waterproof: The IP67 waterproof protection enables the FiveGo to withstand wet and demanding environments. With the compact carrying case FiveGo is the ideal partner for any outdoor measurement.

Introduction
Hanna Instruments Edge DO dissolved oygen meter from Wolflabs. Edge’s groundbreaking design is the culmination of Hanna’s vision, design capabilities, integrated production and world-class R&D. Edge is a single meter that can measure dissolved oxygen and is incredibly easy to use.

Features and benefits
- Clark type polarographic probe with replacement membrane cap
- Ranges: 0.00 - 45.00 mg/L (ppm), 0.0 - 300% oxygen saturation
- Accuracy ± 1.5% full scale
- Calibration at 1 or 2 points 0% and 100% (air)
- Automatic temperature compensation from 0 to +50°C
- GLP data Records date, time, calibration standards, altitude value and salinity value
- Altitude compensation -500 to 4000 metres
- Salinity Compensation 0 to 40g/L
- Large 140mm LCD display with clear full text readout
- Capacitive touch keys
- Digital smart electrodes enable edge to automatically recognise and store sensor type, ID and calibration information
- Programmed for basic and advanced modes
- Log-on demand and interval logging
- PC interface via micro USB
- Data download onto USB stick via standard USB
- GLP data automatically transferred
- 2 USB ports
- Easy plug-in 3.5mm connector
- Slim and lightweight, edge can be hand-held or wall mounted with supplied bracket

Introduction
Mettler Toledo Seven2Go portable dissolved oxygen meters from Wolflabs. Robust in design, optimized for one-handed use, and comprising an intuitive menu structure, the new Seven2Go portables offer quality dissolved measurement for laboratory, at-line, and outdoor environments.

Features and benefits
- Seven2Go's new intuitive menu guarantees out-of-the-box operation for anyone. Users no longer need to study lengthy operating instructions. A brief look at the graphical QuickGuide and the instrument is installed and ready for calibration and actual measurement.
- Seven2Go's new T-pad hardkey buttons with clicker technology improve the speed with which you move through menus and set measurement parameters. The intuitive and faster navigation shortens the time to actual measurement.
- Visual and accoustic signals can be setup to announce warnings, button presses or end-point stability, allowing you to focus your eyes on your ongoing measurement, sample handling, or the moving product line.
- Thanks to its IP67 protection and drop test resistance, the new Seven2Go portables are able to withstand harsh and demanding environments. The weatherproof USB connector ensures data can be transferred safely even after the meter has been exposed to heaps of water.
- The outdoor user mode, which comes in addition to the routine and expert laboratory modes, provides users with default instrument settings (e.g. screen brightness sleep mode, and auto-shutdown) that ensure the Seven2Go portable's battery lasts, even if the nearest AA batteries are miles away.

Introduction
Hanna Instruments HI-98193 dissolved oxygen meter from Wolflabs. The HI-98193 portable Dissolved Oxygen meter has extended ranges of up to 50 ppm and 600% saturation.

Features and benefits
- IP67 rated waterproof, rugged enclosure
- Salinity compensation - users can set the salinity value
- Automatic pressure compensation - built-in barometer with user-selectable units (mmHg, inHg, atm, psi, kPa, mbar)
- Built-in calculations - determination of Biochemical Oxygen Demand (BOD), Oxygen Uptake Rate (OUR) and Specific Oxygen Uptake Rate (SOUR)
- Automatic polarisation of probe at startup
- Ready to use PTFE preformed membrane caps
- Approximately 200 hours of continuous use
- BOD is calculated in mg per litre from the difference between the initial and final dissolved oxygen concentration readings
- All necessary parameters for BOD testing can be set and displayed at once
- A list of all saved BOD data can be easily retrieved and shown on the LCD display
- OUR results measured in mg of oxygen consumed per L per hour
- SOUR results measured in mg of oxygen consumed per g of volatile suspended solids per hour

Introduction
Cole-Parmer - Jenway 9500 dissolved oxygen meter from Wolflabs. The 9500 is a research meter designed for use in a number of applications including fish farming/breeding, all forms of aquaculture, environmental analysis, pollution control and effluent management. The 9500 includes powerful data logging capabilities with the ability to store 250 DO2 readings either manually, at timed intervals or on alarmed events. The 9500 also includes full support for the B.O.D5 day test protocol and has the ability to store up to 20 B.O.D data sets, each with up to 10 samples.

Features and benefits
- Results as % air saturation, % oxygen or mg/l
- Automatic zeroing and calibration
- Atmospheric pressure and salinity correction
- B.O.D5 measurement and calculation
- RS232 for connection to printer or PC and IrDA for cableless printing option

Introduction
Hanna Instruments dissolved oxygen meter from Wolflabs. Professional testing and analysis out in the field is supported by the Hanna HI-98196 portable multiparameter meter. Waterproofed to IP67 this compact, robust instrument comes complete with a multi-function probe and quick connect field replaceable sensors. Optimum practice is further supported with a great pack of GLP features and optional screw-on calibration beaker plus quick calibration solution.

Features and benefits
- Waterproof: IP67 rated housing for meter: IP68 for probe
- Colour-coded sensors – easy to replace in the field
- Auto-sensor recognition
- Quick calibration feature
- pH CAL CHECK™: alerts you to problems during calibration including dirty or broken electrode, contaminated buffer and overall probe condition
- Automatic or manual temperature compensation: pH sensors incorporate a built-in temperature sensor  
- Automatic logging: stores up to 45,000 samples
- Log-on demand: stores measurement data at the press of a button
- GLP: provides data from previous calibration to support best working practice
- Auto-hold: automatically holds the first stable reading on display
- Calibration timeout: alerts you when calibration is due at specified intervals
- Help menu: on-screen context specific help is readily available at the press of a button
- Clear display: dot matrix display with multifunction virtual keys
- Backlit LCD Intuitive keypad: hard and virtual soft keys
- Connectivity: PC connectivity via microUSB and HI-92000 software
- 200-hour battery life: 4 x 1.5AA batteries pH specific features
- Manual or automatic temperature compensation
- Calibration: up to 5-point calibration with 7 standard buffers and 5 custom buffers

Prices starting at £391 - https://www.wolflabs.co.uk/laboratory-products/dissolved-oxygen-meters

Prices starting at £393 - https://www.wolflabs.co.uk/laboratory-products/dissolved-oxygen-meters

Introduction
New HI-98198 dissolved oxygen meter from Hanna Instruments has been added. The HI98198 meter is a rugged, portable dedicated dissolved oxygen (DO) meter designed for fresh and saltwater measurements of dissolved oxygen. This professional, waterproof meter complies with IP67 standards and measures DO, barometric pressure, and temperature. The HI98198 is supplied with a HI764113 digital optical dissolved oxygen probe in a custom thermoformed durable carrying case with accessories. It is compact and ergonomically designed to provide ready access to the materials required for routine sampling.

Features and benefits
- Automatic temperature compensation with one-point temperature calibration.
- Salinity compensation.
- Built-in calculations.
- Built-in barometer.
- AutoEnd freezes the next stable measurement value on the display.

Introduction
New DO dissolved oxygen meters from Eutech have been added.

Features and benefits
- Easy to read display.
- Compact design fits your palm perfectly.
- Energy and cost saving.
- Automatic temperature compensation.

Introduction
Eutech PD 450 dissolved oxygen meter from Wolflabs.

Features and benefits 
- Large, backlit graphic display.
- Durable waterproof and dustproof design.
- Auto buffer recognition.
- Calibration due alarm.

New InLab OptiOx 51344621, 51344622 and 51344623 dissolved oxygen meters from Mettler Toledo have been added.

Introduction
Cole-Parmer DO 700 and DO 2700 Dissolved Oxygen Meters from Wolflabs

Features and benefits
- Space-saving design
- Large display allows for reading across the room
- Store up to 500 readings for later retrieval