Explorer semi-micro balances
- 12 Months limited warranty
- Readability of 0.01 mg
- Programmable IR sensors
Ohaus Explorer semi-micro balances for Application-Based Model Selection
This series is great for laboratory weighing, formulation, sample preparation, incoming inspection, and production quality control, where the right choice often depends on differences in capacity, readability, pan size, portability, and calibration options.
When laboratory work and research requires accuracy to the hundred-thousandth, there is simply no room for error.
Explorer’s high-speed single module loadcell is precision-made from a single block of metal. This advanced design makes it rugged, highly repeatable, and suitable for a wide variety of environments and applications. Each weighing cell is individually temperature compensated and undergoes OHAUS’ rigorous testing process under a range of conditions. OHAUS’ industry leading signal processing and advanced filter options prevent drift, and allows for use in sub-optimal environments.
Applications - Explorer semi-micro balances
Weighing, Percent Weighing, Parts Counting, Check Weighing, Dynamic/Animal Weighing, Filling, Totalization, Formulation, Differential Weighing, Density Determination, Peak Hold, Pipette Adjustment, SQC
Display
Full-color VGA graphic display (5.7 in. diagonal), 4-wire resistive touch screen. QWERTY keyboard and numeric keypad to quickly input GLP and GMP data and other application data
Operation
AC Adapter (Included)
Communication
Easy access communication ports including 2 units of USB port and RS232 and an optional fourth port of either RS232 or Ethernet. GLP/GMP Data Output with Real-Time Clock. Data Transfer Function.
Construction
Metal base, ABS top housing, stainless steel pan, anti-static glass draftshield with flip-top door, replaceable in-use cover, automatic door as option models
Design Features
AutoCal fully-automatic internal calibration system, fast stabilization time, four touchless sensors, built-in ionizer with automatic door models, up to 14 operating languages, OIML models available, SAVE to USB function, menu lock switch, security bracket, integral weigh below hook for below balance weighing applications, removable stainless steel weighing platform, stability indicator, overload and underload indicators, auto standby.


- Geared for high-performance with up to 0.01mg readability and capacities up to 220g. The AutoCal™ Internal Calibration system ensures the accuracy of results in applications that require high precision.
- Equipped with a color touchscreen display that enhances the user experience. In addition, touchless sensors, automatic draftshield doors (on select models), and ionizer ensure the integrity of results.
- SmarText™ 2.0 software, intuitive icon-based navigation, 99 item library, 6 user profiles, and below minimum sample weight indication – all combine to provide an easy yet efficient weighing experience.



Approvals
- Metrology: OIML R76, EN 45501 (Class I, nmax 220000)
- Product Safety: EN 61010-1, IEC 61010-1
- Electromagnetic Compatibility: IEC 61326-1, EN61326-1 (Class B emissions, Industrial immunity)
Related Products
For complementary high-precision instruments, consider the Explorer Analytical Balances for advanced lab applications, the High-Capacity Precision Balances for larger weighing tasks, or the OHAUS Scout STX for portable and versatile lab weighing needs.
Product Q&A
What makes the Explorer Semi-Micro balance highly precise?
The balance uses a high-speed single module loadcell made from a single block of metal, temperature-compensated cells, advanced signal processing, and filter options to prevent drift, ensuring accurate results even in sub-optimal environments.
Which applications can be performed on this balance?
Applications include Weighing, Percent Weighing, Parts Counting, Check Weighing, Dynamic/Animal Weighing, Filling, Totalization, Formulation, Differential Weighing, Density Determination, Peak Hold, Pipette Adjustment, and SQC.
What are the key features of the touchscreen display?
The 5.7" full-color VGA graphic display with 4-wire resistive touchscreen includes QWERTY and numeric keyboards for fast input of GLP/GMP and other application data.
How does the AutoCal system benefit the user?
AutoCal provides fully automatic internal calibration, ensuring measurement accuracy and repeatability for high-precision applications.
What ensures durability and stability of the Explorer Semi-Micro balance?
Durability comes from a metal base, ABS top housing, stainless steel pan, anti-static draftshield, touchless sensors, integral weigh below hook, stability indicator, and overload/underload indicators.
How is data communicated and exported?
The balance offers multiple connectivity options including USB, RS232, optional Ethernet, and GLP/GMP data output with real-time clock. Data can also be saved directly to USB.
Are there models with automatic doors and ionizer?
Yes, select models feature automatic draftshield doors and a built-in ionizer to maintain optimal weighing conditions.
What is the maximum readability and capacity?
The Explorer Semi-Micro balances offer up to 0.01 mg readability with capacities up to 220 g, depending on the model.
Specifications Explorer semi-micro balances - which model suits me best?
| Models | EX125D | EX125 | EX225D | EX225D/AD | EX225/AD |
| Capacity | 52 g / 120 g | 120 g | 120 g/220g | 120 g/220 g | 220 g |
| Readability (d) | 0.01 mg / | 0.01 mg | 0.01 mg / | 0.01 mg / | 0.01 mg |
| 0.1 mg | 0.1 mg | 0.1 mg | |||
| Approved Readability (e) | Non-approved model | ||||
| Repeatability (20 g) (std. dev.) | 0.015 mg | ||||
| Repeatability (100 g)(std. dev.) | 0.1 mg | 0.02 mg | 0.02 mg / 0.1 mg | 0.03 mg | |
| Linearity | ±0.1mg | ||||
| Span Calibration Points | Standard AutoCal, AutoCal on Δ1.5° temperature change, 3 hours | ||||
| Calibration | 50 g | 50 g | 100 g | 100 g | 100 g |
| 100 g | 100 g | 150 g | 150 g | 150 g | |
| 200 g | 200 g | 200 g | |||
| Automatic Door | n/a | Standard* | |||
| Weighing Units | g, mg, kg, ct, gn, oz, ozt, lb, dwt, N, mom, tical, msg, tola, baht, Hong Kong Tael, Singapore Tael, Taiwan Tael, Custom Units 1, Custom Unit 2, Custom Unit 3 | ||||
| Applications | Weighing, Parts Counting, Percent Weighing, Checkweighing, Dynamic Weighing, Filling, Totalization, Formulation, Differential Weighing, Peak Hold, Density Determination, Pipette Adjustment, Statistical Quality Control | ||||
| Stabilization Time | 0,1 mg : ≤3 second, 0,01 mg : ≤8 second | ||||
| Sensitivity Temp. Drift | 0.50 ppm / °C | ||||
| Min-Weight (typical) | 20.0 mg, fine range (USP, u=0.10%, k=2) | ||||
| Min-Weight (optimal) | 9.0 mg, fine range (USP, u=0.10%, k=2) SRP≤0.41d** | ||||
| Display | 5,7’’, 14.5 cm (diagonal) Full-Color touch screen | ||||
| Interface | Standard connectivity: 1 USB host, 1 USB device, 1 RS232 | ||||
| Optional connectivity: 2nd RS232, Ethernet | |||||
| Working Environment | 10°C – 30°C, 85% RH, non-condensing | ||||
| Storage Conditions | -10°C – 60°C at 10% to 90% RH, non-condensing | ||||
| Power Supply | AC Adapter Input: 100 – 240 VAC 0.6 A 50/60 Hz, AC Adapter Output: 12 VDC 1.5 A | ||||
| Pan Size | Ø 3.1 in / 80 mm | ||||
| Dimensions | 9 x 15.5 x 13.8 in / 230 × 393 × 350 mm | ||||
| (W . H . D) | |||||
| Shipping Dimensions | 24.9 x 25.2 x18.4 in / 632 × 640 × 467 mm | ||||
| (W . H . D) | |||||
| Net Weight | 15.5 lb / 7 kg | 16.5 lb / 7.5 kg | |||
| Shipping Weight | 26.5 lb / 12 kg | 27.8 lb / 12.6 kg | |||
| *Two motorized doors operated by 4 sensors or an onscreen button | |||||
| **The value for SRP is the standard deviation for n replicate weighing’s (n ≥ 10) | |||||
Product Models
| Product | Price | ||
|---|---|---|---|
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Explorer semi-micro balances - EX225D/AD - Capacity: 120 g/220 g |
$USD 9,414.00
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Explorer semi-micro balances - EX125 - Capacity: 120 g |
$USD 8,910.00
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Explorer semi-micro balances - EX225AD - Capacity: 220 g |
$USD 11,566.00
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Explorer semi-micro balances - EX225D - Capacity: 120 g/220 g |
$USD 9,117.00
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Explorer semi-micro balances - EX125D - Capacity: 52 g/120 g |
$USD 7,148.00
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