MyPu MYP16-50 Heavy-Duty Magnetic Stirrer with Integrated Precision Scale

Overview

The MyPu MYP16-50 Heavy-Duty Magnetic Stirrer with Integrated Precision Scale is an engineered solution for laboratories and pilot-scale production environments requiring simultaneous high-volume mixing and real-time mass monitoring. Unlike conventional magnetic stirrers or standalone bench scales, this instrument integrates a robust PTFE-coated stirring platform with a calibrated load-cell-based weighing system—enabling closed-loop process control during liquid-phase reactions, formulation, dissolution, or blending operations. It operates on the principle of rotating magnetic coupling: a microprocessor-controlled motor drives a rotating permanent magnet beneath the work surface, inducing synchronous rotation of a magnetic stir bar immersed in the vessel. The integrated scale employs electromagnetic force compensation or strain-gauge technology (depending on configuration) to deliver stable, drift-compensated mass readings under dynamic mechanical loading conditions—critical when stirring viscous or foaming media at up to 1400 rpm.

Key Features

• Dual-functional control architecture: Independent left-panel scale interface and right-panel stirring controls enable parallel operation without cross-interference.
• High-capacity stirring capability: Designed for vessels up to 50 L (water-equivalent), supporting glass reactors, stainless-steel tanks, and jacketed vessels with appropriate stir bar selection.
• Precision mass monitoring: 100 kg maximum capacity with 0.01 kg resolution and ±0.2 kg accuracy—validated per OIML R76 Class III specifications for laboratory use.
• Programmable operational safeguards: Tare memory storage, upper-limit addition alarm, and lower-limit subtraction alarm functions support GLP-compliant material accountability and prevent overfilling or under-dosing.
• Extended timer functionality: Adjustable stirring duration from 1 minute to 9999 minutes (166.6 hours), suitable for long-term stability studies or slow-reaction kinetics monitoring.
• Robust mechanical design: Reinforced aluminum alloy housing, heat-resistant ceramic top plate, and sealed electronics ensure durability in humid, chemically exposed environments typical of QC labs and pilot plants.

Sample Compatibility & Compliance

The MYP16-50 accommodates standard laboratory glassware (e.g., beakers, flasks, and reactor vessels) as well as industrial-grade containers with flat, non-magnetic bases. Compatible stir bars include PTFE-encapsulated, PTFE/glass composite, and high-strength samarium-cobalt variants rated for >100 °C and >500 cP viscosity. The device complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets EMC requirements per EN 61326-1. While not certified for hazardous area use (ATEX/IECEx), it is routinely deployed in ISO 17025-accredited testing labs, pharmaceutical R&D facilities operating under ICH Q5/Q7 guidelines, and chemical manufacturing units aligned with GMP Annex 15 validation protocols.

Software & Data Management

The MYP16-50 operates via embedded firmware without external PC dependency; however, optional RS-232 or USB-to-serial interfaces support ASCII-based data export to LIMS or ELN platforms. All weight and timer events—including tare actions, alarm triggers, and end-of-cycle signals—are timestamped and stored in non-volatile memory (retaining ≥1000 records). Audit trail functionality satisfies basic FDA 21 CFR Part 11 requirements for electronic records when paired with user-access-controlled logging software. Calibration routines follow internal reference standards traceable to NIM (National Institute of Metrology, China), with documented calibration certificates available upon request.

Applications

• Pharmaceutical formulation: Real-time mass tracking during solvent addition in suspension preparation or granulation binder mixing.
• Chemical synthesis: Controlled reagent dosing into reaction mixtures while maintaining agitation—reducing manual handling errors and improving reproducibility.
• Quality control testing: Dissolution testing per USP , where precise volume-to-mass ratios must be maintained across multiple vessels.
• Academic research: Teaching labs requiring quantitative demonstration of conservation of mass during multi-step reactions or polymerization kinetics.
• Food & beverage R&D: Viscosity-independent blending of emulsions, sauces, or dairy-based suspensions at pilot scale.

FAQ

What is the maximum recommended viscosity for stable stirring at full speed?
Stable operation at 1400 rpm is verified for Newtonian fluids ≤ 500 cP (e.g., aqueous solutions, low-concentration polymer dispersions); for higher viscosities, optimal performance is achieved at ≤800 rpm with appropriately sized stir bars.
Can the scale be recalibrated in-house?
Yes—the unit supports two-point calibration using certified weights (1 kg and 50 kg), following instructions in the operator manual; calibration logs are retained in device memory.
Is the stirring platform compatible with hot plates?
No—the MYP16-50 is a magnetic stirrer only and does not incorporate heating elements; it may be used alongside external heating mantles or water baths provided thermal expansion does not compromise scale stability.
Does the device meet ISO/IEC 17025 traceability requirements?
When supplied with a factory calibration certificate bearing NIM-traceable references, the scale subsystem satisfies ISO/IEC 17025 Clause 6.5.2 for measurement equipment used in accredited testing.
What maintenance intervals are recommended?
Visual inspection and cleaning every 3 months; annual verification of stirring torque consistency and scale linearity using reference loads; no scheduled lubrication required due to brushless DC motor design.