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Mettler Toledo MR303 Precision Balance, Internal Calibration, 320 g x 0.001 g

Product Overview: Discover unmatched accuracy with the Mettler Toledo MR303 Precision Balance, the ultimate choice for professionals demanding exceptional precision in laboratory and quality control environments. Equipped with advanced features like internal calibration and a large full-color touch screen, this precision balance delivers reliable results every time. Seamlessly blending intuitive operation with robust performance, the MR303 stands as a top-tier tool for laboratories prioritizing consistency and efficiency.

Main Advantages:

  • Unrivaled Precision & Reliability: The MR303's electromagnetic force compensation (EMFC) weighing cell enables readings up to 0.001 g, ensuring fast, precise measurements needed for critical laboratory work.
  • Automatic Internal Calibration: With FACT automatic internal calibration and calibration reminders, you achieve consistently accurate results with minimal manual intervention, reducing errors and improving workflow.
  • Streamlined Data Management: Advanced data handling features, including intuitive touch-screen interfaces, configurable sample IDs, and statistical analysis tools, simplify results tracking and reporting.

Why This Product is Essential: For laboratories and quality control settings, the Mettler Toledo MR303 Precision Balance is not just an instrument—it's a necessity. Its blend of unmatched accuracy, effortless operation, and intelligent data management gives your lab the edge in maintaining compliance, achieving reproducible results, and boosting productivity. Invest in the MR303 to ensure consistency and confidence in your measurements, meeting even the most stringent standards.

Specifications and Guides:

  • Features:
    • Electromagnetic Force Compensation (EMFC) weighing cell
    • FACT automatic internal calibration for precise adjustments
    • Calibration reminders for continuous accuracy
    • MT-SICS command support for seamless PLC and MES system integration
    • Robust full metal housing with overload protection
    • Easy-to-clean QuickLock draft shield
    • Large, full color touch-screen interface
    • Fast stabilization time and leveling assistant
    • Tracked activity logs and statistical data analysis
    • Configurable sample and task IDs
  • Manuals: Comprehensive user manuals and quick-start guides (available upon purchase or from the manufacturer’s official resources) ensure seamless setup and operation.
  • Guides: Integrate the MR303 into your laboratory workflow with step-by-step guides for calibration, data management, and maintenance to maintain peak performance.
  • Specifications:
    • Maximum capacity: 320 g
    • Readability: 0.001 g
    • Internal calibration: FACT automatic
    • Stabilization time: Fast response
    • Durable metal construction
    • Draft shield: Easy-to-clean QuickLock design
    • Connectivity: MT-SICS, PLC, MES compatibility

Innovation and Reliability at Our Core

At Machine Horizon, we believe that powerful machines drive progress. Our mission is to make advanced technology accessible to creators, engineers, and businesses across industries—from precision CNC and milling to farming, printing, and laboratory equipment.

We’re dedicated to providing reliable, high-performance machines that help you produce, build, and innovate with confidence. Every product we offer is carefully selected for its engineering quality, efficiency, and long-term value.

A Customer-First Approach

We’re more than an online store—we’re your partner in finding the best machine for your need. Unlike large, impersonal retailers, our dedicated team delivers personalized guidance at every step. Whether you’re exploring, seeking expert advice, or need ongoing support, our specialists are always just a call or email away.

Passion for Machinery & Resilience


Our brand is built on a deep respect for craftsmanship, performance, and reliability. We understand how important the right equipment is to your success—that’s why we focus on machines that combine innovation with lasting durability. From small workshops to large production facilities, Machine Horizon provides solutions that help you work smarter, faster, and better.

Trusted Experts, Curated Brands


We partner directly with industry-leading manufacturers across multiple sectors to ensure every product meets our standards for quality and performance. Our curated selection means you can shop with confidence, knowing each machine is backed by expert support and full manufacturer warranties.

More Reasons to Choose Machine Horizon

  • Price Match Guarantee – We’ll match any competitor to ensure you always receive the best value.
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With Machine Horizon, you don’t just buy equipment—you invest in performance, precision, and long-term reliability

Frequently Asked Questions

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Most orders ship out within 1–2 business days and arrive within 3–5 business days depending on your location.
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Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
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