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Ohaus EXP225D/AD Semi-Micro Balance with Advanced Weighing and Communication Features
Product Description
The Ohaus EXP225D/AD Semi-Micro Balance is a precision analytical balance designed for advanced weighing applications in biotechnology, molecular diagnostics, and clinical laboratories. It features a maximum capacity of up to 220 g with an exceptional readability of 0.01 mg and a zinc alloy weighing pan (80 mm x 80 mm), making it essential for precise mass measurement and density determinations critical in bioprocessing and synthetic biology workflows.
Key technical features include:
- AutoCal™ automatic internal calibration ensuring consistent accuracy without manual intervention
- 7-inch TFT 16.7M color touchscreen interface with glass overlay for intuitive control and real-time data visualization
- Support for versatile weighing modes such as basic weighing, parts counting, percent weighing, density determination, pipette adjustment, and formulation — widely used in biopharmaceutical production pipelines and molecular cloning workflows
- Robust communication interfaces including USB Host (Type A), USB Device (Type B and C), Ethernet (RJ45), and RS232 ports, with optional Wi-Fi and Bluetooth dongles for seamless integration into laboratory information management systems (LIMS)
- Durable modular design with metal base, anti-static glass draftshield, motorized leveling, and built-in ionizer to minimize static interference and improve measurement reliability in sensitive cell imaging and fluorescence analysis environments
- Enhanced safety via anti-pinch automatic doors and two touchless sensors to ensure operator protection and sample integrity
- Comprehensive user management system with 4-level access control and internal logging capacity of 100,000 entries, facilitating compliance with quality control standards (SQC) required in molecular diagnostics and biomanufacturing
- Measurement units support for specialized mass units widely used in research including milligram, carat, ounce, tical, and custom units, enabling adaptability in diverse biotechnology applications
- Operating conditions optimized for laboratory environments: temperature range 10°C to 30°C, 80% relative humidity (non-condensing)
The Ohaus EXP225D/AD semi-micro balance is critical for precision weighing tasks in biotechnology research, neuroimaging sample preparation, live-cell imaging quantification, and quality control in pharmaceutical manufacturing. Its advanced connectivity and versatile applications make it widely adopted in laboratories requiring high reliability and traceable measurements for sensitive analytical procedures.
Item Stats
Product details
| Maximum Capacity | 120 g/220 g |
| Readability | 0.01 mg; 0.1 mg |
| Pan Size | 3.14 in x 3.14 in (80 mm x 80 mm) |
| Internal Calibration | AutoCal™ - Automatic |
| Draftshield | Included |
| Dimensions | 16.1 in x 14.6 in x 9 in (408 mm x 372 mm x 229 mm) (LxHxW) |
| Battery Life | Not Applicable |
| Legal for Trade | Not Applicable |
| Auxiliary Display Model | Available as an Accessory |
| Auto Door | Anti-pinch autodoors |
| Tare Range | To capacity by subtraction |
| Working Environment | 50°F – 86°F, 80%RH, non-condensing (10°C – 30°C, 80%RH, non-condensing) |
| Net Weight | 17.2 lb (7.8 kg) |
| In-Use Cover | Included |
| Communication | USB device; USB host x 2; RS232; Ethernet TCP/IP; WiFi/Bluetooth (available as an accessory) |
| Power | AC Adapter (Included) |
| Units of Measurement | Ounce Troy; Pennyweight; Grain; Tical; Custom; Milligram; Momme; Newton; Baht; Gram; Tola; Mesghal; Carat; Ounce |
| Minimum Weight | 2 mg |
| Display | 7" colour TFT touchscreen |
| Pan Construction | Zinc Alloy |
| Built-in Ionizer | Yes |
| Stabilization Time | 5 s |
| Repeatability, typical | 0.1 mg |
| Minimum Weight (USP, 0.1%, typical) | 20 mg |
| Linearity ± | 0.2 mg |
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