Benchtop pH Meter: pH mV Meter with 21 CFR Part 11 Support - pH -2 to 20 - 0.002 pH Accuracy

Introduction

Regulated labs need pH results they can defend in an audit, with calibration records and user control built in. Note that Mettler Toledo lists this model as discontinued since January 2026, so availability is confirmed at quotation. The compliance-ready benchtop Mettler Toledo SevenExcellence S400 pH Meter measures pH and ORP with ±0.002 pH accuracy and supports 21 CFR Part 11 work through user management and method-based operation.

Technical Specifications

The figures below come from the manufacturer's data. The core specifications for the Mettler Toledo SevenExcellence S400 pH Meter are:

• Model: SevenExcellence S400-RB-Kit
• Material No.: 30393276
• Parameters: pH, ORP
• Channel: single-channel
• Sensor included: InLab Expert Pro-ISM
• pH measuring range: -2.000 to 20.000
• pH resolution: 0.001 / 0.01 / 0.1
• pH accuracy: ±0.002
• mV resolution: 0.1 / 1
• mV accuracy: ±0.1
• Temperature range: -30 to 130 °C
• Temperature resolution: 0.1 °C
• mV measuring range: -2000.000 to 2000.000 mV
• Temperature accuracy: ±0.1 °C
• Memory: 250 analyses (20,000 data points)
• Data transfer: PC, printer, USB stick
• Connectors: LAN, USB A, USB B, RS232, Mini-DIN, BNC, Cinch/RCA, Mini-LTW
• ISM compatible: Yes
• Display: color TFT touchscreen
• Dimensions: 235 x 188 x 75 mm
• Weight: 1510 g

Standard Accessories Included

• SevenExcellence S400 meter with InLab Expert Pro-ISM sensor (kit). Full scope of supply is confirmed at quotation.

Items Excluded

• Printer
• LabX software
• Additional modules and sensors for semisolid samples or media
• Stirrer, barcode reader and automation accessories

Pre-installation Requirement

• A PC with a free port if data transfer or LabX software will be used.
• Electrical requirements are confirmed at quotation.

Key Benefits

Several daily bottlenecks ease when you work with the flexible and audit-ready Mettler Toledo SevenExcellence S400 pH Meter.

Efficiency

One click starts a sample, a series or an analysis series with an optional autosampler, and data archiving runs automatically after each analysis.

Accuracy

Methods with strict user guidance monitor offset and slope during calibration.

Safety and comfort

Password protection and user management protect settings from unwanted changes.

Read more on the Mettler Toledo S400-RB-Kit page. You can also compare it with our benchtop pH meter kit.

Key Features

• 21 CFR Part 11 support, GLP, password protection and user management
• Methods with strict user guidance for calibration
• Room for three modules to add parameters later
• Large color touchscreen

Solving Common Lab Problems

Worried about audit trails for pH results? The Mettler Toledo SevenExcellence S400 pH Meter for daily lab work supports 21 CFR Part 11 with password protection and user management.

Need to add parameters later? The meter takes three modules in any order, so it can grow with your work.

Warranty & Support

We provide a 1-year manufacturer's warranty covering parts and labor. Technical support, installation assistance, and operational training are also available. Replacement parts and consumables are available throughout the product's service life.

Request a Quotation or Technical Datasheet

Contact us about the reliable Mettler Toledo SevenExcellence S400 pH Meter for your lab for more information, customized configurations, and solutions tailored to your specific requirements.