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Ohaus Explorer™ 255D/AD Semi-micro Balance

SKU: 4AJ-6268204


Ohaus Explorer™ 255D/AD Semi-micro balance is designed to provide exceptional weighing performance for even the most complex weighing tasks.

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Ohaus Explorer™ 255D/AD Semi-micro balance is designed to provide exceptional weighing performance for even the most complex weighing tasks.

AutoCal™ automatic internal calibration system ensures the balance is always ready to use and eliminates the need for manual routine calibration. The automatic door feature allows access to the weighing chamber without the need to touch the draftshield door.

Large data management capabilities are provided through internal databases which can be used to store, manage and retrieve application and system data. An internal weighing mode library allows saving and loading of log files. Up to 110 users can be assigned to 1 of 4 pre-existing groups with varying rights to access.

Applications include: Weighing, Percent Weighing, Parts Counting, Check Weighing, Dynamic/Animal Weighing, Filling, Totalization, Formulation, Differential Weighing, Density Determination, Peak Hold, Pipette Adjustment, and SQC.


  • High resolution, full-colour VGA graphic display (5.7” diagonal)
  • QWERTY keyboard and numeric keypad to quickly input GLP and GMP data
  • Four programmable touchless sensors allow the operator to perform common functions and commands with a swipe of the hand
  • Modular design in which the base and display can be separated to allow the balance to fit ideally on the lab bench
  • Antistatic coated glass helps dissipate static charges in the weighing chamber which could adversely affect the weighing results
  • Library for storage of personal application settings
  • Mains operation
  • USB host, USB device, and RS232 ports as standard (optional 4th port for either RS232 or Ethernet)
  • GLP/GMP data output with real time clock


Maximum Capacity: 120 g/220 g

Readability: 0.01 mg;  0.1 mg

Repeatability, typical: 0.015 mg

Stabilisation Time: 8 s

Linearity: ± 0.1 mg

Minimum Weight (USP, 0.1%, typical):  20 mg

Internal Calibration: AutoCal™ – Automatic

Units of Measurement: Ounce Troy; Pennyweight; Momme; Gram; Kilogram; Grain; Tola; Tical; Mesghal; Carat; Ounce; Custom

Pan Size: 80 mm

Pan Construction: Stainless Steel

Draftshield: Included

Auto Door: Included

Auxiliary Display Model: Available as an Accessory

Built-in Ionizer: Yes

Communication: USB (included); RS232 (included); USB Host (included); Ethernet (available as an accessory)

Dimensions (L x H x W): 393 x 350 x 230 mm

Display: Full colour 5.7 in VGA, touch screen

In-Use Cover: Included

Net Weight: 7 kg

Power: AC Adapter (included)

Working Environment:  50°F – 86°F, 85%RH, non-condensing (10°C – 30°C, 85%RH, non-condensing)

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Ohaus Explorer™ 255D/AD Semi-micro Balance