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Mettler Toledo MX303/A Precision Balance, Internal Calibration, NTEP, 320 g x 0.001 g

Product Overview:

Step up to unmatched precision in measurement with the Mettler Toledo MX303/A Precision Balance. Engineered for laboratory professionals and industrial users alike, this high-performance balance delivers accuracy you can trust even in the most demanding environments. Its advanced technology, intuitive touchscreen, and automatic internal calibration ensure every result is both reliable and effortless, letting you focus on efficiency and productivity.

Main Advantages:

  • Effortless Accuracy: Automatic FACT internal calibration guarantees that your balance is always ready for precise measurements without manual recalibration, minimizing downtime and operator intervention.
  • Intuitive Operation: A spacious full-color touchscreen and an ergonomic draft shield with ErgoDoor design make sample handling and navigation seamless, boosting productivity for busy research or quality control labs.
  • Comprehensive Data Management: Powerful onboard software offers GxP-compliant data logging, activity tracking, and statistical analysis, safeguarding data integrity and traceability for regulated environments.

Why This Product is Essential:

For any lab where reliable, traceable results are non-negotiable, the Mettler Toledo MX303/A is an indispensable asset. Its NTEP-approved accuracy, robust construction, and user-focused features make it a trusted tool for research, quality control, and industrial applications alike. Protect your process integrity while saving time—this precision balance is exactly what your laboratory equipment lineup needs.

Specifications and Guides:

  • Features:
    • High-precision MonoBloc weighing cell technology
    • FACT automatic internal calibration
    • ErgoDoor draft shield for one-handed operation
    • Backlit draft shield to illuminate the weighing chamber
    • Calibration reminders and passcode protection for security
    • Large, user-friendly touchscreen display
    • Overload protection and durable, full metal housing
    • Easy-to-clean QuickLock draft shield
    • Statistical data analysis and tracked activity log
    • Configurable sample/task IDs and leveling assistant
    • GxP compliance, power saving mode, and NTEP approval
  • Manuals:
    • Comprehensive installation and user manuals available from Mettler Toledo
  • Guides:
  • Specifications:
    • Capacity: 320 g
    • Readability: 0.001 g
    • Fast stabilization and leveling assistant
    • GxP-compliant data logging, tracked activity, and passcode protection
    • Power-saving mode and robust overload protection

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.
  • Free Shipping – Enjoy free delivery on most* orders across the lower 48 U.S. states.
  • 100% Secure Ordering – Our platform uses SSL encryption to protect your information.
  • Exclusive Packages & Volume Discounts – Custom pricing available for workshops, labs, schools, and bulk orders.
  • Authorized Dealer – Every order is protected with full manufacturer support and warranties.


With Machine Horizon, you don’t just buy equipment—you invest in performance, precision, and long-term reliability

Frequently Asked Questions

Yes! We provide free and fast shipping on MOST orders within the continental United States. However, some specific brands and items will require a quote. You can live chat or call us for a quote
Most orders ship out within 1–2 business days and arrive within 3–5 business days depending on your location.
We offer easy returns as long as your item meets the conditions outlined in our Return Policy. Items must be unused, in original packaging, and returned within the specified return window.
Absolutely! Our in-house product experts are here to help. Live chat or call us 513-743-829 for personalized advice before or after your purchase.
Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
Yes, we only sell 100% authentic, brand-new products, sourced directly from our manufacturers or authorized distributors.

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