OHAUS EXP225/AD Explorer EXP Semi-Micro Balance, 220 g Capacity, 0.01 mg Readability, AutoCal, Touchscreen

OHAUS EXP225/AD Semi-Micro Balance — 220 g Capacity at Sub-Tenth-Milligram Resolution

High-volume semi-micro weighing up to 220 grams is the defining advantage of the OHAUS EXP225/AD Semi-Micro Balance. Where similar instruments cap out at 120 g, this model extends the 0.01 mg resolution range to nearly double that threshold—ideal for labs that handle heavier sample matrices or larger weighing vessels but still require microgram-level discrimination. The 5-second stabilization time reflects the care required at this resolution tier.

Key Features

• Extended Semi-Micro Range: 220 g maximum capacity with 0.01 mg readability serves labs weighing both large and small samples at the same resolution without instrument switching.
• Built-In Ionizer: Actively neutralizes electrostatic charge on the zinc-alloy pan, essential for accurate micro-weighing of powders, films, and hygroscopic materials.
• AutoCal Temperature-Triggered Calibration: Automated internal calibration responds to thermal changes, maintaining integrity throughout long analytical runs.
• Motorized Draftshield with Anti-Pinch Protection: Power-assisted autodoors seal the weighing chamber and open via proximity sensors, preventing air drafts from disrupting ultra-precise measurements.
• 0.02 mg Typical Repeatability: Consistent sub-fifty-microgram performance supports reproducible results across repeated measurements of the same sample.
• Sample Spotlight and Status LEDs: Integrated chamber lighting and status indicators help operators confirm stability before capturing a weight value.
• Multi-Protocol Connectivity: Ethernet, RS232, USB-A ×2, USB-B, and USB-C support simultaneous data routing to printers, LIMS, and lab computers.

Detailed Overview

The OHAUS EXP225/AD Semi-Micro Balance suits research environments where sample masses routinely exceed 120 g yet require resolution well below 0.1 mg. With a USP minimum weight of 20 mg, it meets pharmacopoeial accuracy requirements across most practical sample sizes. The 80 × 80 mm zinc-alloy pan fits standard semi-micro weighing boats, while the enclosed draftshield protects readings from air conditioning, door movements, and building vibration. User management supports up to four access levels, and a 100,000-entry log maintains a complete audit trail for ISO-accredited or GMP-regulated operations. Optional Bluetooth and Wi-Fi dongles enable wireless transmission of results to mobile stations or cloud-connected LIMS platforms, extending laboratory flexibility without additional cabling.

Applications

• Large-volume semi-micro pharmaceutical weighing and API dispensing
• Environmental sample analysis involving heavier matrices
• Gravimetric moisture determination of larger sample quantities
• Bioanalytical weighing requiring microgram repeatability
• Preparation of dense calibration standards

Why Choose the OHAUS EXP225/AD?

When standard 120 g semi-micro balances create bottlenecks because sample masses are too large, the EXP225/AD removes the constraint without downgrading resolution. Its compliance infrastructure, ionization system, and full connectivity suite match those of any instrument in the Explorer EXP line. Add to cart and bring extended semi-micro capability into your lab today.