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Ohaus Semi-Micro Analytical Balance EXR225 with 7" Color Touchscreen and Multi-Function Weighing
Product Description
The Ohaus Semi-Micro Balance EXR225 is a high-precision laboratory weighing instrument designed for advanced analytical applications including density determination, parts counting, formulation, and percent weighing. This semi-micro balance offers a maximum capacity of 220 g with a fine readability of 0.01 mg, making it suitable for molecular diagnostics, bioprocessing sample prep, and synthetic biology workflows requiring precise mass measurement.
Key features include:
- 7-inch TFT 16.7M color touchscreen with a glass overlay for intuitive operation and clear data visualization, essential for workflow efficiency in biotechnology labs.
- Advanced weighing modes such as dynamic weighing, totalization, differential weighing, and peak hold, critical for complex biomanufacturing and molecular cloning protocols.
- Robust metal housing with an anti-static glass draftshield and a zinc alloy aero weighing pan (80 mm x 80 mm) ensures stable and accurate measurements in variable laboratory environments.
- Communication interfaces include USB host (Type A) x2, USB device (Type C), Ethernet (RJ45), RS232, with optional Wi-Fi and Bluetooth dongle support, facilitating data integration into laboratory information management systems (LIMS).
- Enhanced security and audit trail capabilities with 4-level user management and internal system log capacity of 100,000 entries, meeting compliance needs in clinical diagnostics and pharmaceutical quality control.
- Supports multiple units of measurement such as milligrams, grams, carats, ounces, etc., adaptable to diverse application requirements including biomanufacturing input materials and synthetic biology reagents.
- Operating environment tolerance from 10°C to 30°C and 80% relative humidity, suitable for standard laboratory controlled environments.
- Built-in AutoCal™ automatic internal calibration secures measurement accuracy without manual intervention, reducing downtime during molecular biology workflows.
This semi-micro balance is widely adopted in research institutions and industrial bioprocessing labs for its precision and versatility. It is critical for live-cell imaging prep, fluorescence analysis, and molecular cloning sample measurements, making it an essential tool in biotechnology research and biopharmaceutical production pipelines.
By integrating advanced communication protocols and touchless sensors, the EXR225 supports efficient data handling for laboratory automation and quality assurance in gene editing and synthetic biology applications.
This precision balance also accommodates a wide range of application sample libraries (up to 1000), enabling tailored weighing protocols for specialized biotechnological and analytical procedures.
Keywords: semi-micro analytical balance, precision weighing scale, density determination balance, laboratory balance touchscreen, molecular diagnostics weighing, bioprocessing scale, synthetic biology laboratory instrument, biopharmaceutical production weighing, parts counting scale, formulation weighing, biotechnology sample preparation.
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 | 15.5 in x 14.6 in x 9 in (393 mm x 370 mm x 230 mm) (LxHxW) |
| Battery Life | Not Applicable |
| Legal for Trade | Not Applicable |
| Auxiliary Display Model | Available as an Accessory |
| Auto Door | Not Applicable |
| 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 | 16.3 lb (7.4 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 | No |
| 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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