Category: Titration | Subcategory: Titration

Metrohm 901 Titrando System

Metrohm 901 Titrando System Image

ITEM: 32221 In Stock

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Metrohm 901 Titrando System ImageMetrohm 901 Titrando System ImageMetrohm 901 Titrando System Image

The Metrohm 901 Titrando System combines a powerful titrator with a sophisticated control unit, providing a comprehensive solution for accurate and efficient titration. With its modular design, this system allows for customization and expansion to meet the specific needs of your laboratory.

Offering unmatched reliability and performance, the Metrohm 901 Titrando System offers precise and rapid titrations. Its high-resolution burette, with a resolution down to 10 nanoliters, ensures accurate dispensing of titrant, even for small volumes. The dynamic Dosing Unit Recognition (DUR) technology automatically recognizes the type and volume of the titration reagent, eliminating the risk of errors and ensuring reliable results.

The Metrohm 901 Titrando System comes equipped with a user-friendly touchscreen interface, providing intuitive control and easy navigation. The large, high-resolution display allows for clear visualization of titration curves, real-time data, and instrument status. The system also offers various connectivity options, including USB and Ethernet, enabling seamless integration with laboratory networks and data management systems.

Flexibility is a key feature of the Metrohm 901 Titrando System. It supports a wide range of titration techniques, including potentiometric, Karl Fischer, and pH stat titrations. The system is capable of performing both simple and complex titrations, allowing for versatile applications in various industries such as pharmaceutical, food and beverage, chemical, and environmental analysis.

The Metrohm 901 Titrando System offers advanced automation capabilities, streamlining your titration workflow. It can be integrated with Metrohm's comprehensive range of sample changers and accessories, enabling high-throughput analysis and reducing manual handling. The system also supports remote control and monitoring, providing flexibility and convenience for multi-user environments or remote operations.

The system is built to the highest standards, with robust construction and durable components that ensure long-term performance and stability. It complies with industry regulations and standards, including GLP/GMP requirements, providing traceable and auditable results.


  • Easy-to-read touchscreen
  • Four MSB connectors (Metrohm Serial Bus) for connecting dosing devices (Dosimat with exchange unit or Dosino with dosing unit), stirrers, titration stands and Remote Boxes
  • Two USB connectors, through which devices such as printers, PC keyboards, barcode readers or additional control devices (USB Sample Processor, Titrando, Dosing Interface, etc.) can be connected
  • Measuring interface for: potentiometric electrode (pH, metal or ion-selective electrode), separate reference electrode, temperature sensor (Pt1000 or NTC), polarizable electrode or an iConnect (measuring interface for electrodes with integrated data chip, so-called iTrodes)
  • Measuring modes include: pH (pH measurement), U (potentiometric voltage measurement), Ipol (voltametric measurement with selectable polarization current) and Upol (amperometric measurement with selectable polarization voltage)
  • Dosing commands include PREP (rinsing the cylinder and tubings of an exchange unit or dosing unit), EMPTY (emptying the cylinder and tubings of a dosing unit), ADD (dosing a specified volume) and LQH (carrying out complex dosing tasks with a Dosino)
  • Easily connects to a computer via USB


Measuring cycle: 100 ms for all measuring modes.
One high-ohm measuring input (Ind.) for pH, metal or ion-selective electrodes and one measuring input (Ref.) for separate reference electrodes.
Input resistance: > 1 · 1012 Ω
Offset current: < 1 · 10–12 A (under reference conditions)
Measuring range, pH: –13 to +20 pH
Resolution: 0.001 pH
Measuring accuracy: ±0.003 pH (±1 digit, without sensor error, under reference conditions)
Measuring range, U: –1,200 to +1,200 mV
Resolution: 0.1 mV
Measuring accuracy, mV: ±0.2 mV (±1 digit, without sensor error, under reference conditions)
Measuring range, Pt: Pt 1000 –150 to +250 °C; NTC –20 to +250 °C, (R (25 °C) = 30,000 Ω and B (25/50) = 3,964 K)
Resolution: Pt 1000 0.1 °C, NTC 0.1 °C
Measuring accuracy: Pt 1000 ±0.2 °C (Applies for measuring range –20 to +150 °C; ±1 digit; without sensor error, under reference conditions), NTC ±0.6 °C (Applies for measuring range +10 to +40 °C; ±1 digit; without sensor error, under reference conditions)
Polarization current, µA : 122.5 to +122.5 µA (increment: 0.5 µA); 125.0 to +125.0 µA: non-guaranteed values, dependent on reference; voltage +2.5 V
Measuring range, mV: –1,200 to +1,200 mV
Resolution, mV: 0.1 mV
Measuring accuracy, mV: ±0.2 mV (±1 digit, without sensor error, under reference conditions)
Polarization voltage, mV: –1,225 to +1,225 mV (increment: 25 mV); –1,250 to +1,250 mV: non-guaranteed values, dependent on reference, voltage +2.5 V
Measuring range, µA: –120 to +120 µA
Resolution, µA: 0.1 µA
Power: 100-240 V, 50/60 Hz
Dimensions 14.2 x 23.1 x 22.7 cm
Weight: 2.6 kg (without accessories)
Material: (housing) Poly(butylene terephthalate) (PBT)
USB Connectors: USB ports 2 USB downstream ports (type A sockets), 500 mA each, for connecting peripheral devices such as printers, keyboards, barcode readers or RS-232/USB Box (Metrohm order no. 6.2148.020).
Controller port: USB upstream port with auxiliary power supply (Mini DIN socket) for connecting Touch Control or computer for controlling the 901 Titrando.

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