METTLER TOLEDO MT5/MX5 Used Analytical Balance

Overview

The METTLER TOLEDO MT5 and MX5 are high-precision analytical balances designed for routine laboratory weighing tasks requiring readability down to 0.01 mg (MT5) and 0.001 mg (MX5), respectively. These instruments operate on electromagnetic force compensation (EMFC) principle — a core technology in modern analytical balances that delivers high stability, fast stabilization time (<2 s), and exceptional repeatability under controlled environmental conditions. As pre-owned units refurbished and certified by SpectraLab Scientific, each MT5/MX5 unit undergoes full functional validation including linearity, eccentricity, repeatability, and sensitivity tests against traceable NIST-traceable standards. Units are shipped ready for immediate integration into GLP-compliant workflows, with no requirement for requalification prior to use in non-regulated or moderate-GxP environments.

Key Features

• EMFC sensor architecture ensuring long-term drift stability and minimal warm-up time
• Integrated draft shield with front-access sliding door (standard on all MT5/MX5 configurations)
• Internal calibration function with motorized weight deployment (MX5 includes automatic calibration; MT5 supports manual or optional auto-calibration upgrade)
• RS232 and USB interfaces for direct data export to LIMS or Excel-based recordkeeping systems
• Multi-language display (English, German, French, Spanish, Chinese) with intuitive icon-driven menu navigation
• IP54-rated housing for resistance to dust ingress and incidental liquid splashes
• Compliance-ready design: supports audit trail generation (via optional LabX software), user access levels, and electronic signature capability when paired with validated software environments

Sample Compatibility & Compliance

The MT5 (max capacity 52 g, d = 0.01 mg) and MX5 (max capacity 52 g, d = 0.001 mg) accommodate standard sample containers including weighing boats, crucibles, and vials up to 120 mm in height. Their compact footprint (210 × 320 × 330 mm) allows seamless integration into fume hoods or laminar flow cabinets. All units meet CE marking requirements and conform to international metrological standards outlined in OIML R76-1 and EN 45501. While not supplied with formal 21 CFR Part 11 validation packages, the hardware architecture supports full compliance when deployed with validated third-party software (e.g., LabX, Empower) and documented SOPs for instrument qualification (IQ/OQ/PQ).

Software & Data Management

Each balance ships with basic firmware supporting GLP-compliant data logging: date/time stamp, operator ID input, gross/net/tare values, and stability indicator status. Raw measurement data can be exported in CSV or TXT format via serial or USB connection. For regulated environments, SpectraLab recommends pairing the MT5/MX5 with METTLER TOLEDO’s LabX software — a platform that enables role-based user management, customizable report templates, automated backup, and full electronic audit trail functionality compliant with FDA 21 CFR Part 11 and EU Annex 11 requirements. All refurbished units include original firmware version 3.2 or higher, ensuring compatibility with current LabX release cycles.

Applications

These balances serve critical roles across pharmaceutical QC labs (e.g., active pharmaceutical ingredient (API) assay, reference standard preparation), academic research (gravimetric analysis, catalyst loading, nanomaterial synthesis), and industrial R&D (polymer formulation, battery electrode mass balancing, catalyst loading). Their precision makes them suitable for USP and EP 2.1.6-compliant weighing procedures where repeatability ≤ 0.002% RSD is required. The MX5 variant is frequently deployed in microgram-scale applications such as forensic toxicology sample preparation and isotopic tracer studies.

FAQ

Are these balances calibrated before shipment?
Yes — each unit undergoes full metrological verification using NIST-traceable weights at SpectraLab’s ISO/IEC 17025-accredited calibration lab. A certificate of test is provided.
Is the 6-month warranty transferable?
No — the warranty applies only to the original purchaser and covers parts and labor for defects in materials or workmanship under normal laboratory use.
Can I upgrade the MT5 to auto-calibration?
Yes — the MT5 hardware supports optional installation of the internal calibration mechanism (part number 30118902); contact our technical team for retrofit feasibility assessment.
Do you provide IQ/OQ documentation?
SpectraLab supplies generic IQ/OQ templates aligned with ASTM E2500 and ISO 14644-1; site-specific qualification must be performed by the end user’s qualified personnel.
What environmental conditions are required for optimal performance?
Operating temperature: 10–30 °C; relative humidity: 20–80% RH (non-condensing); vibration isolation table recommended for MX5 in high-traffic labs.