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Ohaus EX423N Explorer Precision Electronic Balance

UsedOhausPrecision Balances AccessoriesUnited States

€3,890.34excl. VAT

In stock

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Maximum Capacity
420 g
Readability
1 mg
Readability (Certified)
0.01 g
Pan Size
5.1 in (130 mm)
Internal Calibration
AutoCal™ - Automatic
All 23 specifications
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Specifications 23

Brands
Ohaus
New/Used
Used
Maximum Capacity
420 g
Readability
1 mg
Readability (Certified)
0.01 g
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
NTEP Certified; Measurement Canada Approved
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 balance with 420g capacity, 1 mg readability, touchscreen, RS232/USB, auto calibration, and draftshield.

The Ohaus EX423N Explorer Precision Electronic Balance (Model #83021344) offers advanced functionality for precise laboratory weighing needs, featuring:

  • Maximum Capacity: 420 g
  • Readability: 1 mg (0.001 g), Certified Readability: 0.01 g
  • Pan Size: 5.1 in (130 mm), constructed of stainless steel
  • Calibration: AutoCal™ automatic internal calibration
  • Draftshield: Included, with glass enclosure and top-mounted side doors (1 mg models only)
  • Display: 5.7" (145 mm) full-color VGA graphic touchscreen with adjustable brightness
  • Communication: RS232 and USB included; optional Ethernet and second RS232 available
  • Operation: AC adapter powered (included)
  • Construction: Modular design with metal base, ABS housing, illuminated level indicator, integral weigh below hook, and security bracket
  • Design Features: Environmental filters, auto tare, user-selectable span calibration points, software lockout/reset menu, multiple communication and print options, up to 14 languages
  • Units of Measurement: Extensive including gram, kilogram, carat, ounce, pound, Newton, and multiple regional tael units
  • Working Environment: 10°C–30°C (50°F–86°F), 85% RH non-condensing
  • Accuracy: Linearity ±0.002 g, repeatability 0.001 g, stabilization time 1 second
  • Tare Range: Full capacity by subtraction
  • Legal Approval: NTEP Certified, Measurement Canada Approved
  • Dimensions: 13.8 in × 15.5 in × 9.1 in (350 mm × 393 mm × 230 mm)
  • Weight: Net 6.9 kg (15.2 lb)
  • Additional: Software supports statistics, formulation, checkweighing, dynamic weighing, density determination, and other specialized functions.

Why Questpair exists

Lab equipment markets are fragmented. Buyers spend weeks calling distributors, comparing quotes, and verifying supplier reliability. Sellers struggle to reach global research labs.

We built Questpair to fix this. Every supplier on the platform is verified before listing. Every quote you receive comes from a real, vetted seller. AI prepares your case in minutes, then a real specialist takes over.

We're an independent team based in The Netherlands, working with research labs and procurement teams across Europe and worldwide.

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?

Yes. Every verified supplier states which service partners cover the instrument, and we list that 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 19 October 2026