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.
