Otisience AMM-6 Multi-Position Magnetic Stirrer (Non-Heating)
| Brand | Otisience |
|---|---|
| Model | AMM-6 |
| Type | Magnetic Stirrer |
| Max. Volume per Position | 0.5 L |
| Speed Range | 0–1200 rpm |
| Position Spacing | 90 mm |
| Speed Uniformity Error | ±5% |
| Plate Material | Stainless Steel (SUS304) |
| Dimensions (W×H×D) | 282 × 45 × 298 mm |
| Power Supply | AC 220 V, 50/60 Hz |
Overview
The Otisience AMM-6 Multi-Position Magnetic Stirrer (Non-Heating) is an engineered solution for parallel sample agitation in analytical, pharmaceutical, and quality control laboratories where thermal stability or ambient-temperature mixing is required. Unlike heating-capable variants, the AMM-6 operates without integrated temperature regulation—making it ideal for applications sensitive to thermal drift, such as enzymatic assays, polymer dissolution monitoring, or buffer equilibration prior to HPLC injection. Its operation relies on a precisely controlled rotating magnetic field generated by high-torque, brushless DC motors beneath each stirring position. This field couples with PTFE-coated magnetic stir bars inside vessels, inducing consistent rotational motion without mechanical contact—eliminating contamination risk and enabling sterile or sealed-vessel protocols. Designed for long-term reliability under continuous duty cycles, the AMM-6 features a robust stainless-steel (SUS304) top plate resistant to corrosion from organic solvents, acids, and alkalis commonly used in sample preparation workflows.
Key Features
- Independent speed control per position: Each of the six stirring stations can be adjusted individually from 0 to 1200 rpm, supporting heterogeneous experimental designs—e.g., comparative kinetics across varying shear rates.
- High-stability drive architecture: Thin-profile brushless DC motors deliver consistent torque across the full speed range, minimizing speed deviation (<±5%) even at low rpm (e.g., 30–100 rpm), critical for delicate suspensions or viscous media.
- Modular start-up sequence: Users may initiate rotation at any single position without affecting others—reducing mechanical shock during addition of reagents or particulates.
- Chemically inert platform: The SUS304 stainless steel surface withstands repeated exposure to ethanol, acetone, 1 M HCl, and 0.1 M NaOH, complying with ISO 15190:2020 laboratory equipment material compatibility guidelines.
- Compact footprint & stackable design: At 282 × 45 × 298 mm, the unit fits standard fume hood interiors and integrates seamlessly into multi-tier lab benches; compatible with optional height-adjustable support frames for ergonomic pipetting alignment.
Sample Compatibility & Compliance
The AMM-6 accommodates standard laboratory glassware including 10–500 mL beakers, Erlenmeyer flasks, and cylindrical vials placed directly on the plate surface. Maximum recommended volume per position is 0.5 L using stir bars ≥30 mm in length and ≥8 mm in diameter. It supports common stir bar coatings (PTFE, PTFE-glass core, and elliptical ceramic) and is validated for use with aqueous, polar organic, and moderately viscous solutions (up to ~500 mPa·s at 25°C). While not certified for explosion-proof environments, its non-heating configuration meets IEC 61010-1:2010 safety requirements for electrical equipment used in laboratory settings. No CE or UL marking is affixed, as the device is intended for research-use-only (RUO) applications outside regulated GMP manufacturing zones.
Software & Data Management
The AMM-6 operates via analog rotary dials with tactile feedback and LED indicators per channel—intentionally omitting digital interfaces to ensure electromagnetic compatibility (EMC) near sensitive instrumentation (e.g., mass spectrometers, potentiostats). No firmware, data logging, or computer connectivity is provided, aligning with GLP Annex 11 principles that prioritize audit-trail simplicity for non-critical process steps. All operational parameters are manually recorded in lab notebooks or LIMS-integrated electronic records. For labs requiring traceable speed documentation, external tachometer validation (per ASTM E2917-22) is recommended during IQ/OQ qualification.
Applications
- Parallel dissolution testing of solid dosage forms under USP conditions (without thermal influence).
- Homogenization of calibration standards for ICP-MS or AAS prior to acid digestion.
- Pre-mixing of immunoassay reagents in ELISA workflow setups where temperature-induced antigen denaturation must be avoided.
- Stirring of solvent-based extraction mixtures in EPA Method 3510C compliant sample prep.
- Equilibration of pH electrodes and ion-selective sensors in multi-channel metrology stations.
FAQ
Does the AMM-6 include temperature control functionality?
No. The AMM-6 is strictly a non-heating model. Temperature-sensitive protocols requiring ambient-only conditions should verify environmental chamber stability independently.
Can the unit operate continuously for 72 hours?
Yes. Rated for continuous operation at ≤80% of maximum speed (≤960 rpm) per position, provided ambient temperature remains between 15–30°C and relative humidity is <70% RH.
Is the stainless steel plate autoclavable?
No. The plate is not designed for steam sterilization; cleaning is limited to wipe-down with 70% isopropanol or mild detergent solutions.
What stir bar size is recommended for optimal coupling at 1200 rpm?
A 40 mm × 8 mm elliptical PTFE-coated stir bar achieves >95% magnetic coupling efficiency up to 1200 rpm in 500 mL aqueous solution at 25°C.
Are replacement motors or control boards available for field service?
Yes. Otisience provides spare motor assemblies (P/N: AMM-MTR-DC6) and PCB modules (P/N: AMM-CTRL-6) with documented service procedures aligned with ISO/IEC 17025:2017 maintenance requirements.
