AM450L-P Laboratory Stirrer by Jihepu

Overview

The AM450L-P Laboratory Stirrer is an overhead electric stirrer engineered for precision mixing and dispersion of low-to-high viscosity liquids in research laboratories, pilot-scale chemical synthesis, pharmaceutical formulation development, and quality control environments. It operates on the principle of mechanical rotational agitation—transferring torque from a high-efficiency series-wound motor through a robust gear-reduction transmission system to drive impellers or paddles immersed in the sample. This architecture ensures stable operation under sustained load, with minimal speed drift and consistent shear input across the full 0–1800 rpm range. Unlike magnetic stirrers limited by heat transfer and vessel geometry, the AM450L-P delivers direct mechanical coupling, enabling reliable processing of viscous media (up to 100,000 mPa·s), heterogeneous suspensions, and temperature-sensitive formulations where precise mechanical energy input is critical.

Key Features

• High-torque output (215.2 N·cm) enabled by integrated torque-multiplying gearbox, supporting demanding applications including polymer dissolution, pigment dispersion, and emulsion stabilization.
• Stable aluminum die-cast housing provides structural rigidity and thermal dissipation, minimizing vibration and ensuring long-term repeatability in continuous-duty (S1-rated) operation.
• Wide, continuously adjustable speed range (0–1800 rpm) with analog or digital potentiometer-based control—no microprocessor-based memory or feedback loop, ensuring deterministic response and electromagnetic compatibility in regulated lab settings.
• Quick-release chuck system (Φ2–13 mm) enables rapid interchange of standard ISO-compliant stirring elements—including paddle, propeller, anchor, and helical blades—without tools.
• Rated for continuous operation at ambient temperatures up to 40 °C and relative humidity ≤80%, meeting typical ISO 14644-1 Class 8 cleanroom support conditions when used with appropriate enclosures.

Sample Compatibility & Compliance

The AM450L-P accommodates vessels from 50 mL beakers to 60 L jacketed reactors, supporting glass, stainless steel, and chemically resistant polymer containers. Its mechanical design complies with IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emission) standards for laboratory equipment. While not certified to UL/CSA or CE for medical device use, it meets general-purpose electrical safety requirements per GB 4706.1 (China National Standard), aligning with common procurement specifications for non-GMP auxiliary lab instrumentation. For GLP/GMP workflows requiring auditability, external speed logging via calibrated tachometer or integration with validated data acquisition systems is recommended—no built-in 21 CFR Part 11 compliant audit trail is provided.

Software & Data Management

The AM450L-P operates as a standalone analog-controlled instrument without embedded firmware, network interface, or proprietary software. Speed setting is manually adjusted and verified using external optical tachometers or frequency meters traceable to NIST or national metrology institutes. This architecture eliminates cybersecurity risks associated with connected devices and supports validation protocols requiring deterministic, non-programmable control logic. Users integrating the unit into automated workflows may interface its analog speed signal (0–10 V or 4–20 mA, if equipped with optional analog output module) with PLCs or SCADA systems compliant with ISA-88 or ISA-95 frameworks.

Applications

• Homogenization of aqueous and organic-phase solutions in synthetic chemistry and catalysis screening.
• Dissolution testing of active pharmaceutical ingredients (APIs) and excipients under USP and guidelines.
• Preparation of calibration standards and reference materials requiring uniform particle suspension (e.g., ISO 13320-compliant laser diffraction sample prep).
• Batch-wise mixing in bioprocess development—media preparation, buffer blending, and cell culture supplement incorporation prior to sterile filtration.
• Quality assurance testing in food and beverage labs: viscosity profiling of sauces, dressings, and dairy emulsions per ASTM D2196 and ISO 3219.

FAQ

Does the AM450L-P include a built-in temperature control function?
No. The unit operates at ambient temperature only; external heating/cooling of the vessel must be managed separately via hot plates, circulators, or jacketed reactors.
Is the speed display digitally calibrated and traceable?
The base model features a non-calibrated analog dial indicator. For metrologically traceable speed verification, users must employ an external handheld tachometer calibrated to ISO/IEC 17025-accredited standards.
Can this stirrer be mounted on a universal stand or fume hood clamp?
Yes. The unit’s base includes standardized M6 threaded mounting holes compatible with industry-standard lab stands (e.g., Fischer Scientific, VWR, or Thermo Fisher universal clamps).
What maintenance is required for long-term reliability?
Annual inspection of carbon brushes, gear lubrication (using ISO VG 68 mineral oil), and chuck jaw wear is recommended. Motor winding insulation resistance should be verified per IEEE 43 annually in high-humidity environments.
Is the AM450L-P suitable for explosive or flammable solvent handling?
No. It lacks ATEX, IECEx, or UL Class I Division 1 certification. Use only in well-ventilated areas with appropriate vapor control measures and explosion-proof ancillary equipment.