METTLER TOLEDO PL1502E Precision Balance

Overview

The METTLER TOLEDO PL1502E is a high-performance precision balance engineered for routine laboratory and quality control environments where reliability, readability, and traceable measurement are essential. Operating on electromagnetic force compensation (EMFC) principle, the PL1502E delivers stable, drift-free weighing results with a readability of 0.01 g across its full 1520 g capacity range. Its compact footprint (194 mm wide × 225 mm deep × 67 mm high) and lightweight ABS/PC housing make it suitable for benchtop deployment in analytical labs, production QC stations, educational facilities, and field applications requiring portable yet metrologically sound mass measurement. The balance meets fundamental requirements for ISO/IEC 17025-compliant weighing processes when used within defined environmental conditions (temperature stability ±2 °C, low vibration, draft-free environment), and its design supports adherence to USP minimum weight validation protocols.

Key Features

• High-contrast backlit LCD display with large, legible digits — optimized for rapid visual verification under variable ambient lighting conditions
• Electromagnetic force compensation (EMFC) sensor technology ensuring long-term stability, minimal drift, and consistent repeatability (typical 0.007 g)
• External calibration capability using certified weights — simplifies periodic verification and satisfies internal audit requirements
• Integrated RS232 interface for direct data transfer to printers, PCs, or LIMS — eliminates manual transcription and reduces documentation errors
• Fast stabilization time of ≤2 seconds — improves throughput in high-volume sample handling workflows
• Robust ABS/PC housing with 160 mm stainless steel pan — resistant to chemical splashes and mechanical impact in shared lab environments
• Battery operation option available — enables flexible deployment beyond fixed power outlets without compromising performance

Sample Compatibility & Compliance

The PL1502E accommodates samples up to 1520 g on its 160 mm diameter pan, supporting common solid, granular, and packaged materials used in pharmaceutical dosage unit checks, raw material receipt inspection, formulation batching, and educational experiments. It is not intended for volatile, corrosive, or static-prone substances without appropriate containment. While the unit itself does not carry CE, UKCA, or FDA registration as a standalone medical device, its metrological performance aligns with foundational requirements of ISO 9001, ISO/IEC 17025, and USP for analytical balance qualification. Users must perform operational qualification (OQ) and periodic performance verification (PPV) per their site’s SOPs, including minimum weight determination (typ. 14 g at 0.1% tolerance) and repeatability testing under actual use conditions.

Software & Data Management

The PL1502E operates as a stand-alone instrument with no embedded software stack; all configuration and output are managed via hardware controls and serial communication. RS232 output follows standard ASCII protocol (e.g., “S 123.45 g” format), enabling seamless integration with third-party data acquisition tools, Excel macros, or custom LabVIEW/VB.NET applications. When connected to a printer, it supports basic label printing (weight + timestamp). For regulated environments, users may implement external audit-trail solutions — such as METTLER TOLEDO LabX (via optional RS232-to-USB adapter) — to capture full electronic records compliant with 21 CFR Part 11, including user authentication, change history, and digital signatures. Raw weighing data can be exported in CSV or TXT formats for statistical process control (SPC) analysis.

Applications

• Pharmaceutical QC: Tablet weight uniformity testing, active ingredient dispensing verification, and excipient batch release checks
• Chemical manufacturing: Raw material receipt inspection, catalyst dosing, and reaction stoichiometry preparation
• Food & beverage: Portion control validation, packaging net weight audits, and ingredient scaling in R&D kitchens
• Academic laboratories: General chemistry and biology experiments requiring sub-centigram resolution
• Environmental testing labs: Soil sample preparation, filter weighing before/after gravimetric particulate analysis
• Metallurgy & materials science: Powder blending consistency checks and small-component mass verification

FAQ

What is the minimum weight I can reliably measure on the PL1502E?
Per USP , the minimum weight is 14 g (at 0.1% tolerance, k=2), determined by repeatability testing under your lab’s operating conditions.
Does the PL1502E support internal calibration?
No — it requires external calibration using certified reference weights; no built-in motorized calibrator is included.
Can this balance be used in a GMP-regulated environment?
Yes, provided it undergoes documented installation qualification (IQ), operational qualification (OQ), and periodic performance verification aligned with your quality system requirements.
Is Bluetooth connectivity standard or optional?
Bluetooth is an optional accessory (not integrated); only RS232 is factory-installed.
What power options are available?
The balance ships with an AC adapter; rechargeable battery packs are available as a separate orderable accessory.