CZGY GYCZ-50 Precision Weighing Magnetic Stirrer

Overview

The CZGY GYCZ-50 Precision Weighing Magnetic Stirrer is an integrated laboratory instrument engineered for simultaneous high-capacity mixing and real-time mass monitoring under controlled mechanical agitation. Unlike conventional magnetic stirrers or standalone balances, this system unifies two critical unit operations—magnetic stirring and precision weighing—within a single, ergonomically partitioned benchtop platform. Its core operational principle relies on contactless torque transmission via rotating magnetic fields (generated by a high-efficiency brushless DC motor) to drive PTFE-coated magnetic stir bars within non-ferromagnetic vessels, while concurrently measuring mass changes with metrological-grade repeatability. Designed specifically for formulation development, dissolution testing, reagent dilution, and batch-wise reaction setup in QC labs, pharmaceutical R&D, and chemical synthesis workflows, the GYCZ-50 eliminates manual transfer steps between balance and stirrer—reducing contamination risk, operator error, and process variability. The absence of mechanical shafts or seals ensures maintenance-free operation and compatibility with sealed or vented containers.

Key Features

• Integrated dual-function architecture: Independent left-side weighing module (150 kg capacity, 0.01 kg resolution) and right-side stirring control panel with synchronized LCD readouts
• High-torque brushless DC motor with closed-loop digital speed regulation, delivering stable rotational output across the full 60–1500 rpm range
• 304 stainless steel chassis with corrosion-resistant surface finish; optional 316 stainless steel 50-L drum available for aggressive chemical environments
• Programmable timer (1–9999 minutes/hours) with auto-shutdown and run-state indication (“RUN” display)
• Electronic tare function with automatic zero-tracking and self-calibration sequence upon power-up
• Universal AC/DC-compatible weighing electronics, supporting uninterrupted operation during brief power fluctuations
• Ergonomic layout with anti-slip rubber feet and locking casters for secure positioning on laboratory benches

Sample Compatibility & Compliance

The GYCZ-50 accommodates standard laboratory glassware (e.g., beakers, Erlenmeyer flasks) and custom vessels fabricated from non-ferromagnetic materials—including borosilicate glass, polypropylene, PTFE, and quartz—with flat, smooth bottoms (1.5–10 mm thickness). Ferrous, copper, or aluminum containers are incompatible due to eddy current interference and magnetic shielding effects. While the instrument itself does not incorporate temperature regulation, its mechanical design conforms to IEC 61010-1:2010 safety standards for electrical equipment used in laboratory environments. Data integrity protocols—including electronic audit trails for weight logging and parameter setting history—support alignment with GLP and ISO/IEC 17025 documentation requirements when paired with validated external data capture systems.

Software & Data Management

The GYCZ-50 operates as a stand-alone hardware platform without embedded firmware-based software. All operational parameters—including set speed, elapsed time, and real-time weight—are displayed locally on dual high-contrast LCD panels. For traceable data acquisition, the weighing module provides a standard RS-232 serial interface (optional USB-to-serial adapter supported), enabling direct integration with LIMS, ELN, or spreadsheet applications via ASCII protocol. Timestamped weight logs can be exported at user-defined intervals, satisfying basic 21 CFR Part 11 compliance prerequisites when deployed with validated third-party data capture software and access-controlled user accounts.

Applications

• Preparation of standardized buffer solutions requiring precise mass-based dilution (e.g., phosphate-buffered saline, Tris-HCl)
• In-process monitoring of polymer dissolution kinetics in solvent systems where mass loss/gain correlates with solvation progress
• Controlled addition of reagents during exothermic reactions, using weight feedback to modulate feed rate
• QC testing of bulk powder blends where homogeneity is assessed via sequential sampling after defined agitation intervals
• Calibration verification of volumetric dispensers using gravimetric methods per USP and ASTM E542
• Environmental sample preparation involving sediment suspension and particle stabilization prior to filtration or analysis

FAQ

What vessel materials are compatible with the GYCZ-50?
Non-ferromagnetic, non-conductive, and non-eddy-current-inducing materials only—such as borosilicate glass, PP, PTFE, or quartz. Avoid stainless steel, aluminum, copper, or any ferrous alloy.
Can the stirrer operate continuously beyond 9999 minutes?
No—the built-in timer caps at 9999 minutes/hours. For extended unattended operation, disable the timer (set to “0”) and monitor manually or integrate with external PLC control.
Is the weighing system factory-calibrated?
Yes, each unit undergoes factory calibration using NIST-traceable weights. Users may perform field verification or recalibration using certified test masses following the included calibration procedure.
Why does the stir bar “jump” at startup?
This occurs when initial speed is set too high. Always ramp up gradually (≤50 rpm increments per second) to allow magnetic coupling stabilization and prevent demagnetization.
Does the instrument support temperature-controlled stirring?
No—temperature regulation is not integrated. For thermostatic applications, pair the GYCZ-50 with an external heating mantle or water bath, ensuring electromagnetic compatibility and thermal isolation from the weighing sensor.