MKN HY-4A Digital Display Variable-Speed Reciprocal Shaker

Overview

The MKN HY-4A Digital Display Variable-Speed Reciprocal Shaker is an engineered solution for precise, repeatable horizontal oscillation in life science and industrial laboratory environments. Based on the Couette-type reciprocal motion principle—where platform displacement occurs along a single linear axis with symmetrical acceleration/deceleration—the instrument delivers controlled mechanical agitation ideal for suspension homogenization, cell culture maintenance, reagent mixing, and extraction protocols. Unlike orbital or rotary shakers, its reciprocating action minimizes vortex formation while maximizing shear transfer across heterogeneous samples, particularly beneficial for viscous media, particulate suspensions, and low-volume tube-based assays. Designed for benchtop integration, the HY-4A features a rigid cast-aluminum base, vibration-dampening feet, and a thermally stable motor housing to ensure long-term operational consistency under continuous duty cycles.

Key Features

• High-efficiency permanent-magnet DC motor with closed-loop speed regulation, enabling smooth, jitter-free operation across the full 0–360 rpm range
• Large LED digital display with real-time rpm readout and independent timer status indicator (0–999 min), supporting both timed and continuous modes
• Dual-layer stainless steel platform fitted with adjustable spring-clamp fixtures—compatible with standard 10–50 mL test tubes, 125–1000 mL Erlenmeyer flasks, separatory funnels, and multi-well microplate carriers (with optional adapter)
• 20 mm fixed stroke length optimized for efficient mass transfer without excessive splashing or foaming in aqueous and semi-viscous solutions
• Overload protection circuitry and thermal cut-off switch integrated into the power management module for safe extended-run applications
• Low-noise design (<55 dB at 1 m distance) achieved through precision-balanced drive assembly and elastomeric mounting isolation

Sample Compatibility & Compliance

The HY-4A accommodates diverse vessel geometries and volumes typical in molecular biology, environmental testing, and quality control workflows—including conical centrifuge tubes, volumetric flasks, digestion vessels, and sample collection bottles. Its 20 kg load rating supports stacked configurations (e.g., multiple flasks on auxiliary trays) while maintaining mechanical stability up to 320 rpm. The device complies with IEC 61010-1:2010 safety standards for electrical equipment used in laboratory settings. While not certified for GMP or GLP environments out-of-the-box, its deterministic speed control, non-volatile timer memory, and absence of firmware-based data logging make it suitable for use in ISO/IEC 17025-accredited laboratories when operated within documented SOPs. No hazardous substances are employed in construction per RoHS Directive 2011/65/EU.

Software & Data Management

The HY-4A operates as a standalone analog-electronic instrument with no embedded microprocessor or connectivity interface. All parameter inputs (speed setpoint, timer duration) are entered via tactile push-button controls; values are retained in hardware-based memory during brief power interruptions (<2 sec). As such, it does not generate electronic records, lacks audit trail functionality, and is not compliant with FDA 21 CFR Part 11 requirements. For regulated environments requiring traceability, users may integrate external digital timers or log operational parameters manually in lab notebooks aligned with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).

Applications

• Cell suspension maintenance in microbial and mammalian cultures during incubation
• Extraction of analytes from solid matrices (e.g., soil, plant tissue, pharmaceutical tablets) using solvent-based protocols
• Homogenization of immunoassay reagents and ELISA coating solutions
• Preparation of calibration standards and reference materials requiring uniform particle dispersion
• Environmental water analysis—BOD bottle agitation, heavy metal leaching tests, and sediment resuspension studies
• Quality assurance testing in food, cosmetics, and chemical manufacturing where batch-wise mixing repeatability is critical

FAQ

What is the maximum recommended operating temperature for the HY-4A shaker?
The unit is rated for ambient operation between 5 °C and 40 °C with relative humidity ≤80% non-condensing. Prolonged exposure above 40 °C may degrade motor insulation and timer electronics.
Can the HY-4A be used inside a CO₂ incubator?
No. It is not designed for humidified, elevated-CO₂, or temperature-controlled enclosures. Condensation ingress and gas corrosion risk invalidate warranty coverage.
Is there a version with programmable multi-step protocols?
Not available in the HY-4A series. For gradient ramping or sequence-based agitation, consider MKN’s HY-5010 programmable orbital shaker platform.
Does the shaker include a locking mechanism for the platform during transport?
No built-in lock exists; however, the platform remains mechanically stable when powered off. Secure transport requires external immobilization of the unit on a dolly or pallet.
What maintenance is required for long-term reliability?
Biannual inspection of clamp spring tension and visual check of motor ventilation grilles for dust accumulation. No lubrication is required—the brushless DC motor is sealed and maintenance-free.