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Mettler Toledo ME103E Compact Analytical Balance with RS232 Interface

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Maximum Capacity
120 g
Readability
1 mg
Repeatability, typical
0.7 mg
Minimum weight (U=1%, k=2), typical
140 mg
Settling Time
1.5 s
All 14 specifications
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Specifications 14

Brands
Mettler Toledo
New/Used
Used
Maximum Capacity
120 g
Readability
1 mg
Repeatability, typical
0.7 mg
Minimum weight (U=1%, k=2), typical
140 mg
Settling Time
1.5 s
Adjustment
External
Interface
RS232
Display
LCD Backlit Display
Weighing Pan Diameter
120 mm
Dimensions
8”x13”x12”
Weight
17 lbs
Electrical Requirements
12V, 0.84A

Product description

Analytical balance with 120 g capacity, 1 mg readability, RS232 output for precise weighing in biotech labs.

The Mettler Toledo ME103E is a compact analytical balance designed for precise laboratory weighing with a maximum capacity of 120 g and readability of 1 mg, ideal for research, quality control, and educational environments. Its robust structure features a 120 mm stainless steel weighing pan and a backlit LCD display with high-contrast digits, ensuring easy readability during biotechnology, molecular diagnostics, and bioprocessing workflows.

Key technical specifications include:

  • Repeatability: Typically 0.7 mg
  • Minimum weight (U=1%, k=2): 140 mg
  • Settling time: 1.5 seconds
  • External adjustment capability for calibration
  • Equipped with a standard RS232 interface for seamless connection to external data capture devices such as printers and computers, supporting basic weight data logging without advanced software.

The device’s two adjustable feet and front-mounted level indicator allow for straightforward leveling and setup, making it suitable for routine analytical weighing in busy laboratory settings. This balance is particularly valuable in synthetic biology research, molecular cloning workflows, and clinical diagnostics, where reliable and repeatable weight measurements are critical.

Dimensions measure approximately 8” x 13” x 12” with a weight of 17 lbs, powered by a 12V, 0.84A supply. The ME103E model belongs to Mettler Toledo’s ME series, focusing on essential balance functionality without extensive software integration, preferred in labs prioritizing simplicity and consistency.

This analytical balance is widely adopted in biotechnology and life science laboratories as an essential instrument for biomanufacturing quality control and standard analytical assays, emphasizing consistent and precise measurement of small mass quantities critical to research and production pipelines.

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Frequently asked questions

How long does laboratory equipment typically last?

With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.

Can I get service for older equipment?

Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.

Where can I buy parts?

Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.

What is the typical lead time for refurbished equipment?

Two to six weeks, depending on refurbishment scope and whether calibration is included.

Does laboratory equipment ship internationally?

We ship to 38 countries. Crating and customs handling are quoted with the instrument.

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Last updated 22 October 2026