Benchmark W3002A-120ACS Pipette Calibration System
| Brand | Benchmark |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | W3002A-120ACS |
| Pricing | Available Upon Request |
Overview
The Benchmark W3002A-120ACS Pipette Calibration System is a fully integrated, benchtop gravimetric calibration platform engineered for ISO 8655-compliant verification and adjustment of single-channel and multichannel pipettes ranging from 0.1 µL to 10 mL. Unlike traditional outsourcing or field-service calibration models, this system enables in-lab, operator-performed calibration using primary mass measurement—eliminating transport delays, third-party scheduling dependencies, and external software licensing. At its core lies a high-stability analytical balance with dual readability modes (62 g × 0.01 mg / 120 g × 0.1 mg), internal motorized auto-calibration, and temperature-compensated electromagnetic force restoration (EMFR) transduction. The system operates on the fundamental principle that volumetric accuracy of air-displacement pipettes is directly traceable to mass measurements of distilled water dispensed under controlled environmental conditions (temperature, humidity, atmospheric pressure), per ISO 8655-6 Annex A.
Key Features
- Integrated ISO 8655-6–compliant gravimetric calibration workflow—no external PC, dedicated software, or network connection required
- Dual-range precision balance: 62 g capacity at 0.01 mg readability for low-volume pipettes (≤ 100 µL); 120 g capacity at 0.1 mg readability for mid-to-high volume ranges (≥ 100 µL)
- Internal automatic calibration (IntCal™) triggered by time intervals, temperature drift (>0.5 °C), or user command—ensuring continuous metrological traceability
- Removable evaporation trap design allows seamless transition from pipette calibration mode to general-purpose weighing tasks without recalibration or hardware reconfiguration
- Stainless-steel draft shield with optimized airflow geometry minimizes convection currents and buoyancy effects during low-mass dispensing events
- Onboard memory stores ≥ 500 calibration records with timestamp, operator ID, ambient conditions (T, P, RH), and statistical summary (mean, SD, CV%, % error vs. nominal)
Sample Compatibility & Compliance
The W3002A-120ACS supports calibration of all standard air-displacement pipettes meeting ISO 8655 mechanical and functional specifications—including fixed-volume, adjustable-volume, positive-displacement, and electronic pipettes. It accommodates tip geometries from 10 µL conical to 10 mL wide-bore, with compatibility verified across major OEM tip brands (e.g., Eppendorf, Gilson, Rainin, Thermo Fisher). All calibration procedures adhere strictly to ISO 8655-6:2022 (Gravimetric method) and support compliance with ISO/IEC 17025:2017 (clause 6.4.10 on equipment verification), FDA 21 CFR Part 11 (audit trail enabled via optional USB export), and GLP/GMP documentation requirements. Environmental monitoring sensors (integrated thermometer, barometer, hygrometer) automatically populate correction factors for water density in real time.
Software & Data Management
Operation is managed via an intuitive, icon-driven touchscreen interface with multilingual support (English, Spanish, German, French, Chinese). No proprietary desktop application is required; however, raw data and PDF calibration certificates (including uncertainty budgets per GUM) can be exported via USB 2.0 to standard file formats (CSV, PDF/A-1b). Audit trails record every critical action—including balance initialization, calibration event initiation, parameter modification, and report generation—with immutable timestamps and operator authentication. Optional firmware updates are delivered via encrypted USB stick, maintaining full version control and validation history for regulated environments.
Applications
This system is deployed across quality control laboratories in pharmaceutical manufacturing (supporting USP , EP 2.9.34), clinical diagnostics (CAP/CLIA accreditation), contract research organizations (CROs), and academic core facilities requiring routine pipette performance verification. Typical use cases include: daily pre-use checks of critical pipettes in QC release testing; quarterly interval calibration per SOP; troubleshooting suspected volume drift in automated liquid handlers; and training new technicians in gravimetric methodology without reliance on external metrology services. Its compact footprint (280 × 360 × 340 mm) and low power draw (<15 W) make it suitable for cleanroom-adjacent workspaces and mobile lab configurations.
FAQ
Does the W3002A-120ACS require annual third-party recalibration?
No—its internal IntCal™ system and factory-traceable mass standards eliminate mandatory annual external recalibration. However, periodic verification against NIST-traceable weights (e.g., annually or per internal QA schedule) is recommended.
Can it calibrate positive-displacement pipettes?
Yes—provided they conform to ISO 8655 mechanical interface dimensions and dispense aqueous solutions compatible with gravimetric assessment.
Is the balance compliant with USP weighing requirements?
Yes—the dual readability modes meet USP minimum weight criteria for both high-precision and general-purpose applications when operated within specified environmental limits.
What environmental conditions must be maintained during calibration?
Ambient temperature stability ±1 °C over measurement period; relative humidity 40–60%; no direct airflow or vibration sources within 1 m radius.
How is measurement uncertainty calculated and reported?
Uncertainty is derived per JCGM 100:2008 (GUM), incorporating balance repeatability, water density correction, temperature/humidity/pressure sensor tolerances, and evaporation loss estimation—fully documented in each PDF certificate.
