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Ohaus Semi-Micro Balance EXP225/AD with 0.01 mg Readability and Automated Draftshield
Product Description
The Ohaus EXP225/AD Semi-Micro Balance delivers exceptional precision with a 220 g maximum capacity and a high-resolution readability of 0.01 mg. Equipped with a 7-inch TFT color touchscreen featuring a glass overlay, it ensures intuitive user operation suited for demanding laboratory environments. This precision balance supports a broad range of analytical weighing applications, including basic weighing, parts counting, dynamic weighing, totalization, formulation, density determination, and pipette adjustment—essential for research in molecular diagnostics, biotechnology, and bioprocessing workflows.
Key technical features include:
- AutoCal™ automatic internal calibration for consistent accuracy without external weights
- Zinc alloy weighing pan (80 mm x 80 mm) optimized for stable, semi-micro weighing tasks
- Enhanced automatic anti-pinch draftshield doors with integrated anti-static glass protection and built-in ionizer to minimize static interference
- Comprehensive connectivity options, including USB Host (Type A), USB Device (Type B and Type C), Ethernet (RJ45), and RS232 ports; optional Wi-Fi and Bluetooth dongles enable seamless integration into digital lab environments
- Modular metal housing with motorized leveling and sample spotlight for ergonomic and precise sample handling
- Extensive application mode support: check weighing, percent weighing, differential weighing, and statistical quality control (SQC), crucial for biomanufacturing and synthetic biology applications
- Large internal memory supporting up to 3000 application sample libraries and four-level user management, facilitating collaborative laboratory workflows
Additional specifications:
- Repeatability typically 0.02 mg and linearity ±0.2 mg, ensuring reliable quantitative results for molecular cloning, live-cell imaging preparations, and fluorescence analysis
- Operating environment range between 10°C to 30°C with 80% relative humidity, non-condensing, suitable for controlled laboratory atmospheres
- Multiple units of measurement including grams, milligrams, carats, troy ounces, and others to accommodate diverse scientific protocols
This semi-micro balance is widely adopted among cell imaging researchers, clinical diagnostics labs, and institutions requiring ultra-precise weighing for biotechnology instrument workflows. Its integration-ready design and robust features make it critical for gene editing sample preparations and quality control in biopharmaceutical production pipelines.
Item Stats
Product details
| Maximum Capacity | 220 g |
| Readability | 0.01 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 | 0.02 mg |
| Minimum Weight (USP, 0.1%, typical) | 20 mg |
| Linearity ± | 0.2 mg |
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