
Water Quality Sondes
Solinst Eureka
2113 Wells Branch Pkwy, Suite 4400
Austin, TX, USA
78728
Tel: +1 512-302-4333
Fax: +1 512-251-6842
email: [email protected]
Water Quality Probes
Solinst Eureka, a global leader in the design and manufacture of multiparmeter water quality sondes.
Solinst Field Services
Safeguard your project’s success and mitigate any potential for downtime or additional costs.
Water Quality Sondes for Every Application
Trimeter and Manta Probes are multi-parameter sondes for monitoring water quality in fresh, brackish and marine waters. All sondes may be used for discrete sampling, profiling, as self-powered loggers, or connected to telemetry stations for continuous real-time monitoring, with water quality data accessible via cloud-based software. Our sondes communicate RS-232, SDI-12 or Modbus, for flexibility in connecting to a variety of different data loggers and PLC’s.
Solinst Eureka offers the largest selection of water quality sensor technologies in the industry. So in addition to standard configurations, each probe may be customized for your specific application. Pick sensors of your choice to fully populate larger probes, or add a battery pack to convert a probe to a logging device.
All Trimeter and Manta probes feature anti-corrosive housings and sensors, robust marine bulkhead connectors, and anti-fouling options. LED status indicators on each sonde provide important diagnostic information. Each probe includes an industry-leading 3 year warranty.
Operate your Trimeter and Manta probes with a variety of display options, via a direct or Bluetooth connection. Intuitive control software, available for Windows, iOS and Android is included at no additional cost with every probe.

Solinst Eureka Multi-parameter Sondes
Trimeter
Solinst Eureka’s compact, low cost Trimeter is designed for projects that require the same high-quality features of a Manta+ probe, but fewer sensors.
- Temperature
- Depth
- Plus any other sensor
Manta +20
The portable, yet rugged Manta+20 Multi-parameter Sonde is well suited for site-to-site spot checking or profiling, in any type of water. The Manta +20 fits in a backpack too!
- Temperature
- pH
- Conductivity
- DO Dissolved Oxygen (optical)

Manta +25
Solinst Eureka’s compact Manta+25 Multi-parameter Sonde is an excellent choice when your application calls for turbidity monitoring, but only a few additional sensors.
- Temperature
- pH
- Conductivity
- Turbidity (or any medium sensor)

Manta +30
Solinst Eureka’s Manta+30 Multi-paramater Sonde packs big 4, ORP, depth, and wipered turbidity – plus one ISE sensor, all into one small rugged probe.
Standard Setup
- pH
- Conductivity
- DO Dissolved Oxygen (optical)
- Turbidity (or any medium sensor)
Medium Sensor Options
- PAR
- Chlorophyll
- Blue-Green algae
- Rhodamine
- Crude oil
- Refined oil
- CDOM/FDOM
- Flourescein dye
- Optical Brighteners
- Tryptophan

Manta +35
Solinst Eureka’s Manta +35 Multi-parameter Sonde accommodates up to 11 different sensors, making it extremely versatile for a wide variety of water quality monitoring applications.
Standard Setup
- Temperature
- pH
- Conductivity
- DO Dissolved Oxygen (optical)
- Turbidity
- Universal Wiper
Small Sensor Options
- Sodium
- Ammonium
- Nitrate
- Chloride
- TDG Total Dissolved Gas

Manta F35
Tired of cleaning fouled sensors? Tired of losing data? Solinst Eureka’s Manta F35 features it’s highly successful Manta+35 Multi-parameter Sonde fitted with a copper nose cone, central wiper blade and more.
Standard Setup
- Temperature
- pH
- Conductivity
- DO Dissolved Oxygen (optical)
- Turbidity
- Universal Wiper
Small Sensor Options
- Sodium
- Ammonium
- Nitrate
- Chloride
- TDG Total Dissolved Gas

Note:
Depth and ORP (must have pH) optional on any probe
Manta +40
Solinst Manta+40, hold more sensors than any multi-parameter probe in the industry. It is ideal for long-term telemetry deployments.

Easy Probe
You’ve never seen this performance at this price in a water-quality monitor.

Solinst Eureka Multiparameter Sonde Options
Manta+ Standard Sensor Configurations
- Standard models are shown. Please call for a quote for custom configurations.
- Any small or medium sensor is optional. Any fluorometer may be substituted for turbidity.
- pH, pH reference, conductivity and DO are “small” sensors.
- For a probe with turbidity sensor, the turbidity wiper extension brush wipes the fluorometer and DO sensor.
- For M+35 and 40 models with no turbidity, a wiper system is available to wipe DO and fluorometer sensors.
- Any sensor may be removed and the port plugged.


Related Products
Water Level, Temperature & Conductivity Datalogging
The Levelogger 5 LTC measures and logs water level fluctuations, temperature and conductivity. It is programmed to record at intervals as often as 2 seconds. It includes an 8-year battery, memory for 100,000 sets of readings, and comes in 6 pressure ranges. A PFAS-free coating (inside and out) provides superior corrosion and abrasion resistance.
TLC Meter – Measure Accurate Temperature, Level & Conductivity
A TLC Meter provides accurate, stable temperature and conductivity measurements, displayed on a convenient LCD display for easy reading. Static water level and depth of readings are read off Solinst flat tape, which is precisely laser-marked every mm or 1/100 ft. Tape lengths are available to 300 m (1000 ft).