Ohaus CY64 Precision Analytical Balance
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | CY64 |
| Instrument Type | Analytical Balance |
| Capacity | 60 g |
| Readability | 0.1 mg |
| Repeatability | 0.1 mg |
| Linearity | ±0.2 mg |
| Pan Diameter | 80 mm |
| Stabilization Time | 3–4 s |
| Calibration | Automatic External Calibration |
| Weighing Units | g, mg, ct, oz, dwt, mom, GN |
| Tare Range | Full Capacity |
| Operating Temperature | 15–35 °C |
| Chamber Dimensions (W×D×H) | 210 × 300 × 320 mm |
| Net Weight | 6 kg |
| Power Supply | 230 V / 50 Hz |
| Compliance | GLP/GMP, ISO 9001 |
Overview
The Ohaus CY64 Precision Analytical Balance is a high-stability, microgram-level mass measurement instrument engineered for routine and regulated laboratory environments. Utilizing electromagnetic force restoration (EMFR) transduction technology, the CY64 delivers consistent, drift-resistant measurements under variable ambient conditions. Its 0.1 mg readability and ≤0.1 mg repeatability meet the performance thresholds required for quantitative analytical workflows—including gravimetric standard preparation, pharmaceutical assay development, and quality control testing per USP and ASTM E898. The balance operates within a thermally stable aluminum-coated housing and features an integrated draft shield chamber (210 × 300 × 320 mm), minimizing convective interference and supporting ISO/IEC 17025-compliant weighing practices.
Key Features
- Electromagnetic force restoration (EMFR) sensor architecture ensuring long-term linearity and minimal hysteresis
- High-contrast LCD display with Advanced Eye Protection (AEP) backlighting—optimized for extended visual fatigue reduction during multi-hour QC sessions
- Automatic external calibration protocol compliant with ISO 17025 traceability requirements; supports calibration certificate documentation
- Full-capacity tare functionality and programmable filter/stability settings to adapt response dynamics to sample volatility or environmental vibration
- Aluminum-painted structural frame providing mechanical rigidity, thermal inertia, and resistance to corrosion in humid or chemically exposed lab zones
- Below-balance weighing hook enabling density determination, magnetic susceptibility assessment, and suspended-sample applications
- RS-232 serial interface for direct integration with LIMS, ELN, or automated data capture systems—no proprietary drivers required
Sample Compatibility & Compliance
The CY64 accommodates standard analytical samples up to 60 g across a wide range of physical states: powders, granules, liquids in tared vessels, and small solid components. Its 80 mm diameter stainless-steel weighing pan supports standard 100 mm glass or ceramic crucibles and volumetric flasks. All operational firmware and hardware design elements comply with GLP and GMP documentation standards—including audit-trail-ready event logging (power-on, calibration, tare, error reset), user-access level configuration, and timestamped result export. The unit conforms to ISO 9001:2015 quality management system requirements and satisfies the metrological criteria outlined in EURAMET cg-18 and OIML R 76 for Class I analytical balances.
Software & Data Management
Data output is natively formatted via RS-232 using ASCII-based protocols compatible with Microsoft Excel, LabArchives, and Thermo Fisher SampleManager LIMS. No middleware installation is required; configurable baud rates (9600–115200 bps), parity, and stop-bit settings ensure interoperability with legacy and modern laboratory networks. Optional Ohaus Acquire software (v3.2+) provides real-time graphing, statistical summary (mean, SD, CV%), and PDF report generation with embedded digital signatures—fully aligned with FDA 21 CFR Part 11 electronic record requirements when deployed on validated workstations.
Applications
- Preparation of certified reference material (CRM) solutions in environmental and clinical labs
- Weighing active pharmaceutical ingredients (APIs) during formulation development under ICH Q5C stability guidelines
- Residue-on-ignition (ROI) and loss-on-drying (LOD) assays per USP
- Calibration of pipettes and volumetric glassware via gravimetric method (ISO 8655-6)
- Material density and specific gravity determination using sinker or buoyancy methods
- Teaching laboratories requiring NIST-traceable instrumentation meeting ANSI/NCSL Z540-1 accreditation criteria
FAQ
Is the CY64 compliant with FDA 21 CFR Part 11 for electronic records?
Yes—when used with validated acquisition software and appropriate access controls, the CY64’s audit-ready event log and timestamped data export satisfy Part 11 requirements for signature verification and record integrity.
Does the balance support internal calibration?
No—the CY64 implements automatic external calibration only, requiring a certified Class M1 or better weight for traceable adjustment per ISO 17025 clause 6.5.3.
Can the weighing chamber be modified or replaced?
The integrated draft shield is fixed and non-modular; however, optional anti-static and low-humidity chamber variants are available under Ohaus part numbers CY-SHIELD-AS and CY-SHIELD-LH.
What is the warm-up time before achieving full specification accuracy?
Minimum 30 minutes at stable ambient temperature (20 ±2 °C); stabilization time increases by ~15% per 5 °C deviation from nominal operating range.
Is the RS-232 interface opto-isolated?
Yes—galvanic isolation protects connected PCs from ground-loop noise and transient surges typical in shared lab power circuits.
