Burrell Wrist-Action Shaker Model 075-785-04-36

Overview

The Burrell Wrist-Action Shaker Model 075-785-04-36 is a precision-engineered mechanical shaker designed specifically to meet the rigorous physical testing requirements defined in the United States Pharmacopeia (USP) for simethicone foam testing. Unlike orbital or reciprocating shakers, this device replicates the natural “wrist-action” motion—characterized by a controlled arc oscillation about a fixed pivot point—enabling reproducible, low-shear agitation of aqueous simethicone emulsions. The shaker operates at a nominal frequency of 300 strokes per minute (±10%), with a precisely calibrated stroke radius of 13.3 ± 0.4 cm measured from the center of the drive shaft and a consistent oscillation angle of 10°. This kinematic profile satisfies USP “Foaming Test for Simethicone” and aligns with compendial validation protocols used in pharmaceutical quality control laboratories for evaluating antifoaming agent performance.

Key Features

• USP-compliant wrist-action mechanism delivering repeatable 10° arc motion at 300 ± 30 rpm (minimum adjustment increment: 30 rpm)
• Robust cast-iron base and precision-machined aluminum arm assembly ensuring long-term mechanical stability and minimal drift over extended operation cycles
• Positive-locking slide-and-cam lever arm system enabling rapid, tool-free positioning and secure fixation at the designated oscillation angle
• Dual-mode timer: programmable 0–60 minute countdown or continuous run mode with audible end-of-cycle alert
• Integrated overload protection and thermal cutoff safeguarding motor integrity under rated 10 lb (4.5 kg) load conditions
• Compact footprint (17.5″ × 17.5″ × 12″) optimized for benchtop integration in regulated QC environments

Sample Compatibility & Compliance

The Model 075-785-04-36 accommodates up to four standard USP-specified simethicone test vessels (e.g., 100 mL cylindrical glass containers) using its included dual clamp set. Its mechanical design conforms to the geometric and dynamic constraints outlined in USP , including stroke radius tolerance (±0.4 cm), angular fidelity (10° ± 0.5°), and stroke rate repeatability (CV ≤ 2.5% over 10 consecutive cycles). The unit is constructed and tested in accordance with UL 61010-1 and IEC 61010-1 safety standards for laboratory equipment. While not inherently temperature-controlled, its ambient-only operation ensures compliance with USP’s requirement for non-thermostated foam testing conditions. Documentation packages—including factory calibration records, mechanical verification reports, and USP method alignment summaries—are available upon request to support GLP/GMP audit readiness.

Software & Data Management

This analog-controlled shaker does not incorporate embedded microprocessors or digital interfaces; operation is managed entirely via front-panel mechanical dials and toggle switches. As such, it provides inherent immunity to software obsolescence, cybersecurity vulnerabilities, or firmware-related validation complications. All operational parameters—including timer setting, speed selection, and arm position—are manually verified and recorded as part of standard operating procedures (SOPs). For laboratories requiring electronic data capture, optional external digital timers with audit-trail capability (21 CFR Part 11 compliant) may be integrated into the workflow without modifying the shaker’s native architecture. Calibration logs and maintenance history are maintained separately in laboratory information management systems (LIMS) per ISO/IEC 17025 requirements.

Applications

• Pharmaceutical QC testing of simethicone-containing formulations per USP
• Comparative foaming studies of surfactant-based emulsions and antifoaming agents
• Stability assessment of suspension systems subjected to low-energy mechanical agitation
• Method development and transfer for compendial foam testing across global manufacturing sites
• Educational demonstrations of fluid dynamics and interfacial phenomena in life science curricula

FAQ

Does this shaker support temperature control?
No. The Model 075-785-04-36 operates exclusively at ambient temperature, consistent with USP specifications.
Can it accommodate eight sample vessels?
No—this specific model (075-785-04-36) supports four containers. The 8-vessel configuration corresponds to Model 075-785-08-36.
Is calibration traceable to NIST standards?
Yes. Factory calibration includes traceable verification of stroke radius, oscillation angle, and cycle frequency using metrology-grade goniometers and optical encoders.
What electrical safety certifications does it hold?
It complies with UL 61010-1 and IEC 61010-1 for electrical safety in laboratory environments.
Are replacement clamps and arms available as spare parts?
Yes. Burrell-certified spare parts—including USP-compliant simethicone bottle clamps (P/N 075-785-04-19) and wrist arms (P/N 075-785-00-19)—are stocked and supplied with full documentation.