The W3120 is the Accuris Compact Anti-Static Ionizer — a benchtop ionizer accessory that neutralizes electrostatic charge on samples, weighing vessels, and the weighing pan before placing them on an analytical or precision balance. The compact form-factor positions next to the balance and provides a focused ion stream for the operator to expose the weighing vessel and sample to before transfer onto the balance pan.
Why Static Matters on Analytical Balances
Electrostatic charge is one of the most common sources of drifting and unstable readings on analytical balances (0.0001 g / 0.1 mg readability tier) and a recurring problem on precision balances (0.001 g / 1 mg readability tier). Charged samples and vessels exert apparent forces on the weighing pan and on the balance housing that the load cell reads as weight changes — readings drift over seconds to minutes, making it impossible to take a stable reading.
Common static-prone weighing scenarios:
- Plastic weigh boats and plastic vials — polypropylene, polystyrene, and polycarbonate vessels accumulate charge readily, especially after wiping with a Kimwipe
- Dry powders — pharmaceutical powders, salt powders, fine reagents (especially after vortexing or pouring through a funnel)
- Low-humidity environments — winter heating in northern climates, climate-controlled cleanrooms, and HVAC-conditioned analytical labs frequently run below 30% RH where static dissipation is slow
- Glass vessels with polymer caps or stickers — labels and lid materials can carry charge that transfers to the vessel during handling
The W3120 ionizer emits balanced positive and negative ions that recombine with surface charges on the sample, vessel, and operator's gloved hands — neutralizing the charge so the balance reads stable mass.
Voltage options: This unit can be ordered with European voltage requirements (230V/50Hz). Contact us to order.
Key Specifications
| SKU | W3120 |
| Type | Compact anti-static ionizer (benchtop) |
| Function | Neutralizes electrostatic charge on samples, weighing vessels, weighing pan |
| Compatible balances | All Accuris balance series — W3100 / W3100A analytical, W3200 precision, W3300 precision |
| Use position | Bench-top adjacent to balance; operator exposes vessel + sample to ion stream before placing on pan |
| Shipping weight | 2.0 lbs |
Datasheet detail note (FQ-014): Working distance, ionization output (ions/cm³), fan flow, and AC voltage input are not stated in the available brochure-extract corpus and are intentionally not stated here rather than guessed. Confirm full ionizer specifications at quote with Accuris.
When to Order This SKU
Order the W3120 when:
- Analytical-balance workflows show drifting readings — the W3100 / W3100A series at 0.0001 g (0.1 mg) readability is highly sensitive to static; visible reading drift while attempting to take a stable mass is a primary indicator
- Weighing dry powders or plastic vessels — recurring weighing of polymer weigh-boats, plastic vials, or fine powders where static buildup is workflow-routine
- Low-humidity laboratory environment — labs running below ~30% RH (winter heating, climate-controlled cleanrooms) where ambient static dissipation is slow
- Pharmacy / pharmaceutical compounding — powder-compounding workflows where micro-weighing of drug substance must be stable and accurate
- Quality-control gravimetric workflows — recurring gravimetric QC where reading instability adds workflow time and uncertainty
Compatibility — Shared Across the Accuris Balance Catalog
The W3120 is a bench-top accessory rather than a chassis-attached accessory — it functions independently of the balance and is compatible with any analytical or precision balance in the Accuris catalog (or any analytical / precision balance from any vendor). Within the Accuris catalog, the relevant balance families are:
| Balance family | Capacity range | Readability tier | Static sensitivity |
| W3100 / W3100A Analytical | 120 g / 210 g | 0.0001 g (0.1 mg) | High — sub-milligram precision is most affected by static |
| W3200 Precision | 500 g / 5,000 g | 0.001 g – 0.01 g | Moderate — 1 mg precision is also affected |
| W3300 Precision | 120 g – 10,000 g | 0.001 g – 0.1 g | Lower — but still benefits in low-humidity environments |
The W3120 is most-frequently ordered alongside the W3100 / W3100A analytical-balance series where static-induced drift has the highest impact on readings.
Frequently Asked Questions
Q: What does the W3120 do? A: It neutralizes electrostatic charge on samples, weighing vessels, and the weighing pan — the charge that causes drifting and unstable readings on analytical and precision balances.
Q: Which balances is it compatible with? A: All Accuris balance series — W3100 / W3100A analytical, W3200 precision, and W3300 precision. It is a bench-top accessory that works independently of the balance.
Q: When do I need an anti-static ionizer? A: When weighing dry powders or plastic vessels, in low-humidity environments (below ~30% RH), or whenever analytical-balance readings drift while attempting a stable measurement.
Q: What are the ionization output and working-distance specifications? A: They are not stated in the available corpus (logged as FQ-014) and are intentionally not guessed — confirm full ionizer specifications with Accuris at quote.
Ordering & Configuration
Bench placement. The ionizer is positioned adjacent to the balance on the lab bench. Operator workflow: weigh-vessel → expose to ion stream → transfer to balance pan → read.
Power configuration. Confirm voltage / plug type at quote — North American (115 V) vs international (230 V) outlet configuration.
Confirm at quote: balance series in use (W3100 / W3100A / W3200 / W3300), workflow static-sensitivity context (powder weighing? plastic vessels? low-humidity environment?), voltage / plug type, and lead time.
Warranty: Per Accuris standard warranty terms — confirm at quote.
Accuris balance accessory family:
- W3120 (this product) — Compact anti-static ionizer
- W3130 — Serial printer (RS232) for Dx / Tx analytical-balance series
- W3140 — Communication kit + iWeight software (RS232-to-USB + data-collection software)
- W3141 — Communication kit + iWeight PRO software (21 CFR Part 11 compliant variant)
- W3300-TP — Thermal printer for W3100 / W3200 / W3300 balances
The ionizer is the workflow-quality accessory; the printers and communication kits are the data-output accessories.
