The W3100-120 is the Accuris Analytical Balance with 120 g capacity and 0.0001 g (0.1 mg) readability, the standard analytical-balance precision tier for routine weighing of reagents, samples, and standards in the milligram range. The W3100 family ships in two capacity variants (120 g and 210 g) and two calibration variants (external calibration / internal calibration with the W3100A series). This W3100-120 is the 120 g external-calibration variant in 115 V configuration. Sized for general lab weighing workflows where the 120 g capacity is sufficient and external calibration weights are part of the lab's standard QM workflow.
Voltage options: This unit can be ordered with European voltage requirements (230V/50Hz). Contact us to order.
Key Specifications
| SKU | W3100-120 |
| Voltage | 115 V (North American outlet) |
| Capacity | 120 grams |
| Readability | 0.0001 g (0.1 mg): standard analytical-balance precision tier |
| Calibration mode | External calibration (with operator-supplied calibration weights) |
| Internal-calibration variant | W3100A-120 (auto-calibration with internal weight) |
| Capacity sister | W3100-210 (210 g capacity, same 0.0001 g readability) |
Analytical Balance Family Position
The Accuris W3100 analytical balance family ships in four configurations:
| SKU | Capacity | Readability | Calibration |
| W3100-120 (this product) | 120 g | 0.0001 g | External |
| W3100-210 | 210 g | 0.0001 g | External |
| W3100A-120 | 120 g | 0.0001 g | Internal (auto-calibration) |
| W3100A-210 | 210 g | 0.0001 g | Internal (auto-calibration) |
Capacity selection (120 g vs 210 g):
- 120 g: sufficient for typical reagent weighing, sample weighing, standard preparation in milligram-to-gram range
- 210 g: supports larger sample / container weights (e.g., weighing into pre-tared 50 mL conical tubes where the empty tube + sample exceeds 120 g)
Calibration mode selection (external vs internal):
- External calibration (W3100 series): operator runs calibration with traceable external weights on a defined schedule; appropriate for labs with established calibration-weight QM workflow
- Internal calibration (W3100A series): instrument auto-calibrates with built-in internal weight on a programmable schedule; reduces calibration workflow burden and ensures consistent calibration across operators
Application Profile
Routine reagent and sample weighing. Milligram-precision weighing for buffer preparation, reagent stock preparation, sample weighing for analytical workflows.
Standard preparation for analytical workflows. Calibration standard preparation, internal standard weighing, and reference material preparation.
Educational and teaching analytical chemistry. Undergraduate and graduate analytical chemistry curricula teaching analytical-balance methodology benefit from the standard 0.0001 g readability tier.
Pharmacy and compounding workflows. Milligram-precision weighing for pharmaceutical compounding, where the 120 g capacity covers typical compounded-formulation component weights.
General lab workflows requiring milligram precision. Research labs, clinical-research labs, and academic labs running routine analytical-precision weighing.
Frequently Asked Questions
What are the capacity and readability of the W3100-120? 120 g capacity with 0.0001 g (0.1 mg) readability, the standard analytical-balance precision tier.
Does the W3100-120 have internal calibration? No. It uses external calibration with operator-supplied weights. The internal auto-calibration variant is the W3100A-120.
Should I choose the 120 g or the 210 g model? Pick 120 g for typical reagent, sample, and standard weighing in the milligram-to-gram range. Pick the W3100-210 when the empty container plus sample can exceed 120 g (e.g., weighing into pre-tared 50 mL conical tubes).
Are calibration weights included? No. External calibration requires NIST-traceable weights at the appropriate class (typically Class F1 or E2), supplied by the lab.
Can the W3100-120 run on 230 V? Yes, a 230 V variant is available by special order for international outlets.
Ordering & Configuration
Calibration weight procurement (external calibration). External calibration requires NIST-traceable calibration weights at the appropriate weight class (typically Class F1 or Class E2 for analytical balances). Operator-supplied; not included with the balance. Confirm calibration-weight inventory at order.
Power configuration. 115 V (this SKU) for North American outlets; a 230 V variant is available by special order for UK / Europe / Australia outlets.
Confirm at quote: voltage configuration (115 V standard; 230 V variant by special order for international outlets), capacity (120 g vs the W3100-210 at 210 g), calibration mode (external W3100 series vs internal W3100A series), calibration-weight inventory, training requirements, and lead time.
Warranty: Per Accuris standard warranty terms. Confirm at quote.
Accuris W3100 analytical balance family:
- W3100-120 (this product, 115 V): 230 V available by special order, 120 g, external calibration
- W3100-210: 210 g, external calibration
- W3100A-120: 120 g, internal auto-calibration
- W3100A-210: 210 g, internal auto-calibration
Pick the SKU matching capacity, calibration mode, and destination outlet voltage.
