Burrell Wrist Action Shaker Model 075-775-08-36

Overview

The Burrell Wrist Action Shaker Model 075-775-08-36 is a precision-engineered laboratory shaker designed to replicate the gentle, elliptical motion of a human wrist—ideal for applications requiring low-shear mixing of sensitive biological samples, suspensions, and reagents. Unlike orbital or reciprocating shakers, this device employs a true wrist-action mechanism that produces smooth, low-amplitude angular oscillation (0–15°), minimizing foaming, cell damage, and particle aggregation. Developed by Burrell Corporation—a U.S.-based manufacturer with over 80 years of experience in laboratory motion control—the unit is widely deployed in regulated environments including pharmaceutical QC labs, clinical diagnostics, environmental testing laboratories, and academic research facilities. Its dual-platform architecture supports simultaneous processing of heterogeneous sample sets under identical mechanical conditions, enhancing experimental reproducibility and throughput efficiency.

Key Features

• Genuine wrist-action motion: 385 cycles per minute with adjustable oscillation angle (0–15°) for optimized mixing intensity across diverse sample viscosities and container types.
• Dual independent platforms: Two removable, interchangeable shaking surfaces allow concurrent operation of different vessel configurations—e.g., one platform fitted with side-arm clamps and the other with horizontal tray support.
• Robust mechanical design: Constructed from powder-coated steel and anodized aluminum components; engineered for long-term stability under continuous duty cycles in ambient and temperature-controlled enclosures.
• Programmable timer: Digital timer offering precise interval control from 1 to 60 minutes, plus continuous mode—fully resettable and non-volatile after power interruption.
• Overload protection circuitry: Integrated thermal cutoff and current-limiting electronics automatically de-energize the motor in case of mechanical jamming, excessive load imbalance, or prolonged stall conditions.
• CE-compliant electrical architecture: Meets IEC 61010-1 safety standards for laboratory equipment; compatible with standard 220 V, 50/60 Hz mains supply without external voltage conversion.

Sample Compatibility & Compliance

The Model 075-775-08-36 accommodates a broad range of laboratory vessels—including Erlenmeyer flasks (250 mL and 500 mL), volumetric flasks, separatory funnels, wide-mouth and narrow-mouth bottles, centrifuge tubes, and USP-compliant glass containers. Optional accessories include standard side-arm clamps (for dual 250 mL flasks), high-capacity reinforced clamps with base stabilization (for dual 500 mL flasks), and a dedicated top-mounted horizontal tray (43.1 × 20.3 × 10.2 cm) supporting up to eight 250 mL flasks. All mounting hardware is chemically resistant and autoclavable where applicable. The system complies with GLP documentation requirements when integrated into validated workflows, and its mechanical consistency supports audit readiness for ISO/IEC 17025-accredited testing laboratories. While not intrinsically temperature-controlled, it is routinely installed inside refrigerated or incubated cabinets (4–37°C operating envelope) for cold-chain or cell culture applications.

Software & Data Management

This analog-digital hybrid shaker operates without embedded firmware or proprietary software—ensuring deterministic timing behavior, zero risk of firmware corruption, and full compatibility with legacy lab infrastructure. All operational parameters are controlled via front-panel rotary dials and push-button switches; no USB, Bluetooth, or network interfaces are present. This design prioritizes regulatory simplicity: no electronic records generation eliminates the need for 21 CFR Part 11 compliance validation, making it suitable for GMP environments where instrument qualification focuses solely on mechanical performance verification (IQ/OQ/PQ). Calibration certificates for oscillation frequency and angle can be generated using traceable metrology tools (e.g., optical encoder-based motion analyzers), and routine maintenance logs align with ISO 9001 preventive maintenance protocols.

Applications

• Biological sample homogenization: Gentle resuspension of bacterial pellets, yeast cultures, and mammalian cell monolayers prior to lysis or staining.
• Pharmaceutical dissolution testing: Agitation of USP Apparatus I (basket) or II (paddle) auxiliary vessels during method development and validation.
• Environmental analysis: Extraction of organic contaminants from soil/sediment matrices using solvent-based shake-flask protocols (EPA Method 3510C).
• Clinical microbiology: Preparation of standardized inocula for antimicrobial susceptibility testing (AST) per CLSI guidelines.
• Quality control of viscous formulations: Uniform dispersion of suspensions in topical creams, ointments, and injectables without introducing air bubbles.
• Educational laboratories: Demonstrating kinetic principles in biochemistry and chemical engineering curricula under repeatable mechanical input conditions.

FAQ

What is the maximum load capacity per platform?
Each platform supports up to 3.6 kg (8 lb) distributed evenly across mounted vessels.
Can this shaker be used inside a cold room or incubator?
Yes—the unit is rated for operation between 4°C and 37°C and features sealed motor housings and non-hygroscopic structural materials suitable for controlled-environment integration.
Is the oscillation angle mechanically adjustable during operation?
No—the 0–15° angle is set manually via calibrated cam adjustment prior to startup; real-time dynamic modulation is not supported.
Does the shaker include built-in temperature control?
No—this is a mechanical-only shaker; external environmental chambers must provide thermal regulation.
Are replacement clamps and trays available as spare parts?
Yes—all accessories—including USP-compliant dimethyl silicone-clamp assemblies—are stocked globally through authorized Burrell distributors and carry individual part numbers for procurement traceability.