CZGY ZW-B Penicillin Vial Mixer

Overview

The CZGY ZW-B Penicillin Vial Mixer is a compact, benchtop mechanical oscillator engineered specifically for consistent and gentle mixing of sealed pharmaceutical vials—particularly penicillin standard solutions—in clinical, public health, and diagnostic laboratory environments. Unlike orbital shakers or incubator shakers, the ZW-B employs a vertical reciprocating motion driven by an eccentric cam mechanism, generating controlled linear oscillation rather than rotational or orbital displacement. This design ensures uniform agitation of liquid contents within upright glass or plastic vials without inducing foaming, phase separation, or excessive shear stress—critical for maintaining the integrity of sensitive antibiotic preparations and standardized reagents. The device operates at a nominal frequency of 1200 cycles per minute (equivalent to 20 Hz), with a full adjustable range from 0 to 3000 rpm, enabling users to optimize mixing intensity based on viscosity, volume, and container geometry. Its spring-suspended platform provides mechanical isolation and damping, minimizing transmission of vibration to surrounding equipment and work surfaces.

Key Features

• Single-platform, vertically oscillating architecture with 6 mm peak-to-peak amplitude for reproducible vial agitation
• Adjustable speed control across 0–3000 rpm, calibrated via analog knob for intuitive operation without digital interface dependency
• Compact footprint (approx. 240 × 180 × 150 mm) and low mass (1.2 kg), suitable for laminar flow hoods, biosafety cabinets, and crowded clinical lab benches
• 25 W brush-type AC motor powered by 220 V AC ±10%, 50 Hz; designed for continuous operation up to 4 hours per session
• Dedicated vial-holding fixture accommodates up to 20 standard 10–20 mL penicillin-type glass vials (diameter: 12–16 mm), secured via spring-loaded clamps
• Grounded chassis and insulated housing compliant with IEC 61010-1 safety requirements for laboratory electrical equipment

Sample Compatibility & Compliance

The ZW-B is validated for use with sterile, sealed pharmaceutical vials containing aqueous antibiotic solutions—including penicillin G potassium, ampicillin sodium, and other β-lactam standards—commonly employed in skin testing, potency assays, and quality control workflows per Chinese Pharmacopoeia (ChP) and WHO guidelines. It does not support temperature-controlled applications or open-vessel protocols. While not certified to ISO/IEC 17025 or FDA 21 CFR Part 11, its mechanical simplicity and lack of embedded software render it inherently compatible with GLP-compliant documentation systems when integrated into manual SOPs. Users must verify vial cap integrity prior to operation to prevent leakage under oscillation.

Software & Data Management

The ZW-B operates as a stand-alone electromechanical instrument with no onboard microcontroller, firmware, or data logging capability. Speed setting is manually adjusted and visually confirmed via green LED status indicator. No software installation, driver configuration, or network connectivity is required. This architecture eliminates cybersecurity concerns, reduces validation burden in regulated environments, and supports long-term operational stability without firmware updates or obsolescence risks. All operational parameters are recorded manually in laboratory notebooks or electronic lab notebooks (ELNs) as part of standard assay documentation.

Applications

• Reconstitution and homogenization of lyophilized penicillin reference standards prior to dilution series preparation
• Uniform mixing of allergen extract vials in hospital allergy clinics and immunology labs
• Agitation of calibration standards used in turbidimetric assays (e.g., microbial growth inhibition tests)
• Pre-analytical sample equilibration for microbiological sensitivity testing per CLSI M07-A10
• Supporting WHO-recommended penicillin skin test protocols in primary care and infectious disease units

FAQ

What types of vials are compatible with the ZW-B?
Standard 10–20 mL Type I borosilicate glass vials with rubber stoppers and aluminum crimp seals—such as those used for USP/EP penicillin reference standards—are fully supported. Plastic vials must be rigid enough to withstand repeated vertical oscillation without deformation.
Is the ZW-B suitable for use inside a biosafety cabinet?
Yes—its low power draw, absence of heat-generating components, and minimal electromagnetic emissions allow safe operation within Class II A2 and B2 cabinets, provided adequate clearance is maintained around the unit.
Does the device include speed calibration documentation?
No factory calibration certificate is supplied; however, users may verify oscillation frequency using a handheld tachometer or strobe light. Routine verification is recommended before critical assay runs.
Can the ZW-B be used for non-penicillin applications?
While optimized for antibiotic vial mixing, it may be applied to other small-volume, sealed-vial homogenization tasks—provided compatibility with solution chemistry, container material, and required agitation intensity is confirmed empirically.
What maintenance is required?
Periodic inspection of the suspension springs and cam follower for wear, cleaning of the platform surface with 70% ethanol, and verification of grounding continuity every six months—per institutional biomedical equipment management protocols.