58k+ listingsShips to NLResponse within one hour+31 73 711 4717info@questpair.com
QuestPair

Mettler Toledo Seven2Go Pro S9 Portable Dissolved Oxygen Meter with InLab OptiOx Sensor

UsedMettler ToledoElectrochemistryGermany

€1,190excl. VAT

In stock

Can't find what you're looking for?

Brands
Mettler Toledo
New/Used
Used
  • Ships to NL
  • Response within 1 hour
  • Warranty available. Buy without worry
  • Support from a scientist

Product description

Portable optical DO meter measuring 0–60 mg/L with IP67 protection, USB transfer, and InLab OptiOx sensor.

The Mettler Toledo Seven2Go Pro S9 is a portable dissolved oxygen meter for precise measurement of dissolved oxygen in liquids. Supplied with an InLab OptiOx optical sensor, it uses optical luminescence technology for rapid measurements without electrolyte replacement or membrane changes.

Its rugged IP67-rated housing, backlit LCD, and automatic or manual calibration support laboratory and field testing. The meter is suitable for environmental monitoring, wastewater treatment, food quality control, biotechnology, bioprocessing, and water quality analysis.

Measurement and performance

  • Measurand: Dissolved oxygen (DO)
  • Measurement units: mg/L and % saturation
  • Measurement range: 0–60 mg/L O₂ / 0–600% saturation
  • Temperature range: 0–50 °C
  • Accuracy: ±0.1 mg/L
  • Calibration: 1- or 2-point calibration using air and zero-point calibration
  • Calibration mode: Automatic or manual
  • Sensor: InLab OptiOx with optical luminescence technology
  • RDO® technology for low-maintenance dissolved oxygen measurement

Instrument features

  • Display: Backlit LCD
  • Data memory: Up to 200 measurements
  • Interface: USB connection for data transfer
  • Protection rating: IP67, dustproof and waterproof
  • Power supply: 4 × AA batteries or mains adapter
  • Dimensions (W × D × H): Approximately 8 × 4 × 22 cm
  • Weight including sensor: Approximately 500 g

The system includes the InLab OptiOx sensor and a transport case. The instrument is described as being in very good condition, tested, functional, and ready for use.

Why Questpair exists

Lab equipment markets are fragmented. Buyers spend weeks calling distributors, comparing quotes, and verifying supplier reliability. Sellers struggle to reach global research labs.

We built Questpair to fix this. Every supplier on the platform is verified before listing. Every quote you receive comes from a real, vetted seller. AI prepares your case in minutes, then a real specialist takes over.

We're an independent team based in The Netherlands, working with research labs and procurement teams across Europe and worldwide.

Frequently asked questions

How long does laboratory equipment typically last?

With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.

Can I get service for older equipment?

Yes. Every verified supplier states which service partners cover the instrument, and we list that alongside the offer.

Where can I buy parts?

Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.

What is the typical lead time for refurbished equipment?

Two to six weeks, depending on refurbishment scope and whether calibration is included.

Does laboratory equipment ship internationally?

We ship to 38 countries. Crating and customs handling are quoted with the instrument.

Reply in one hour

Can't find the exact configuration?

Tell us what you need and a scientist finds it for you, usually within the hour.

Last updated 19 October 2026