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Ohaus Precision Balance EXP423/AD with 7" Color Touchscreen and Automated Draftshield
Product Description
The Ohaus Precision Balance EXP423/AD is a high-accuracy digital laboratory scale designed for advanced weighing applications in research, biotechnology, and quality control environments. It features a maximum capacity of 420 g with a readability of 1 mg, supporting precision weighing for molecular diagnostics, synthetic biology workflows, and bioprocessing quality assessments.
Key technical features include:
- 7-inch TFT 16.7M color touchscreen with glass overlay for intuitive user interface and enhanced visibility
- Modular construction with a durable metal base and housing, including a stainless steel (SST 316) weighing pan (130 mm x 130 mm)
- Automated anti-pinch doors and an anti-static glass draftshield equipped with a built-in ionizer and sample spotlight for stable weighing conditions—essential in biopharmaceutical production pipelines
- Motorized leveling system and dual touchless sensors for increased measurement reliability and repeatability (typical 1 mg)
- Comprehensive communication options including USB Host (Type A x2), USB Device (Type B & C), Ethernet (RJ45), RS232, with optional Wi-Fi and Bluetooth dongles, enabling seamless integration with laboratory information management systems (LIMS) and biotechnology data networks
- Supports advanced weighing modes such as Basic Weighing, Parts Counting, Percent Weighing, Density Determination, Formulation, Dynamic Weighing, and SQC (Statistical Quality Control), critical for applications in molecular cloning, live-cell assay preparations, and pharmaceutical fill weight variation analysis
- Internal AutoCal™ automatic calibration ensures consistent precision in variable lab conditions, with a rapid stabilization time of 1.5 seconds
- Units of measurement include versatile options (e.g., milligram, gram, carat, pennyweight, Newton) catering to diverse scientific and industrial standards
- Robust security and data management features like time synchronization via NTP, 4-level user management, and a system log capacity of 100,000 entries
- Compact footprint with dimensions of 408 mm x 372 mm x 229 mm (LxHxW) and a net weight of 7.8 kg, suitable for benchtop deployment in cleanroom or controlled environment laboratories
This balance is widely adopted in biotechnology research for critical biomanufacturing quality control, molecular biology sample preparation, and clinical diagnostics weighing tasks, providing precision and automation to enhance reproducibility and workflow efficiency. Its versatile communication interfaces and application libraries make it a vital tool for laboratories engaged in synthetic biology, gene editing workflows, and bioprocessing scale-up studies.
Item Stats
Product details
| Maximum Capacity | 420 g |
| Readability | 1 mg |
| Pan Size | 5.1 in x 5.1 in (130 mm x 130 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 | Singapore Tael; Ounce Troy; Pennyweight; Grain; Tical; Custom; Milligram; Momme; Newton; Baht; Taiwan Tael; Gram; Hong Kong Tael; Tola; Mesghal; Carat; Ounce |
| Minimum Weight | 0.14 g |
| Display | 7" colour TFT touchscreen |
| Pan Construction | Stainless Steel |
| Built-in Ionizer | Yes |
| Stabilization Time | 1.5 s |
| Repeatability, typical | 1 mg |
| Minimum Weight (USP, 0.1%, typical) | 1.4 g |
| Linearity ± | 2 mg |
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