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Ohaus EX423 Explorer Precision Electronic Balance 420 g Capacity, 1 mg Readability

UsedOhausAnalytical Balances AccessoriesUnited States

From€4,837.92excl. VAT

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Maximum Capacity
420 g
Readability
1 mg
Pan Size
5.1 in (130 mm)
Internal Calibration
AutoCal™ - Automatic
Draftshield
Included
All 22 specifications
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Specifications 22

Brands
Ohaus
New/Used
Used
Maximum Capacity
420 g
Readability
1 mg
Pan Size
5.1 in (130 mm)
Internal Calibration
AutoCal™ - Automatic
Draftshield
Included
Auxiliary Display Model
Available as an Accessory
Battery Life
Not Applicable
Communication
RS232 (Included); USB (Included); Ethernet (Available as an Accessory)
Dimensions
13.8 in x 15.5 in x 9.1 in (350 mm x 393 mm x 230 mm)
Display
Full-color 5.7 in VGA, touch screen
In-use cover
Included
Legal for Trade
Not Applicable
Linearity ±
0.002 g
Minimum Weight (USP, 0.1%, typical)
1.6 g
Net Weight
15.2 lb (6.9 kg)
Pan Construction
Stainless Steel
Power
AC Adapter (Included)
Repeatability (typical)
0.001 g
Stabilization Time
1 s
Tare Range
To capacity by subtraction

Product description

Precision electronic balance with 420 g capacity, 1 mg readability, touchscreen, RS232/USB communication, and auto calibration.

  • Maximum Capacity: 420 g
  • Readability: 1 mg
  • Pan Size: 5.1 in (130 mm) stainless steel pan
  • Display: 5.7" (145 mm) full-color VGA graphic touchscreen with adjustable brightness
  • Calibration: AutoCal™ automatic internal calibration
  • Draftshield: Included, glass with top-mounted side doors and flip/sliding top door (for 1 mg models)
  • Communication Interfaces: RS232 and USB included; second RS232/Ethernet available as accessory
  • Data Output: GLP/GMP compliance with real-time clock
  • Construction: Modular design with metal base, ABS top housing, illuminated level indicator, integral weigh below hook, security bracket, calibration lock, four touchless sensors, and in-use cover
  • Design Features:
  • Selectable environmental filters
  • Auto tare function
  • User-selectable span calibration points
  • Software lockout and reset menu
  • User definable project and user IDs
  • Auto standby mode
  • Supports up to 14 operating languages
  • Units of Measurement Supported: Baht, Carat, Custom, Grain, Gram, Hong Kong Tael, Kilogram, Milligram, Mesghal, Momme, Newton, Ounce, Ounce Troy, Pennyweight, Pound, Singapore Tael, Taiwan Tael, Tical, Tola
  • Environmental Operating Range: 50°F – 86°F (10°C – 30°C), 85% RH non-condensing
  • Stabilization Time: 1 second
  • Repeatability (typical): 0.001 g
  • Linearity: ±0.002 g
  • Minimum Weight (USP, 0.1% typical): 1.6 g
  • Dimensions: 13.8 in x 15.5 in x 9.1 in (350 mm x 393 mm x 230 mm)
  • Net Weight: 15.2 lb (6.9 kg)
  • Power Supply: AC adapter included
  • Tare Range: To capacity by subtraction
  • Applications: Weighing, parts counting, percent weighing, checkweighing, animal/dynamic weighing, filling, totalization/statistics, formulation, differential weighing, density determination, peak hold, ingredient costing, pipette adjustment, SQC, statistics

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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 4 November 2026