Qiangle DSHZ-300A Rotational Water Bath Incubator Shaker

Overview

The Qiangle DSHZ-300A Rotational Water Bath Incubator Shaker is an engineered platform for precise temperature-controlled agitation of liquid samples in microbiological, biochemical, and cell culture applications. It operates on the principle of orbital rotational motion within a thermostatically regulated water bath environment—ensuring uniform heat transfer via convection while minimizing shear stress on sensitive biological suspensions. Unlike air-jacketed shakers, the water bath design provides superior thermal stability and homogeneity across the entire sample tray, critical for protocols requiring tight thermal control (e.g., enzyme kinetics, bacterial growth curves, solubility studies, and hybridization reactions). The unit integrates a microprocessor-based intelligent temperature controller with adaptive PID algorithm, enabling dynamic compensation for ambient thermal drift—particularly beneficial in laboratories experiencing seasonal or regional climate variation (e.g., high-humidity southern China vs. low-temperature northern environments), thereby reducing overshoot and improving setpoint convergence.

Key Features

• Wide-speed rotational drive: Adjustable oscillation frequency from 40 to 300 rpm, calibrated and reproducible across the full range using brushless DC motor technology.
• Precision water bath thermal management: Temperature range spans from ambient water temperature up to 98 °C, with digital setpoint resolution of 0.1 °C and spatial uniformity maintained within ±0.5 °C across the working chamber.
• Stable orbital motion profile: Fixed 26 mm amplitude ensures consistent mixing intensity without splashing or vortex formation in standard culture vessels (e.g., test tubes, flasks, and multi-well plates).
• Extended programmable timing: Digital timer supports durations from 0 to 999 minutes, supporting unattended operation for overnight incubations or multi-stage protocols.
• Single-tier stainless steel tray: One removable, corrosion-resistant platform rated for maximum load of twelve 250 mL Erlenmeyer flasks or equivalent volume configurations.
• Robust thermal-electrical architecture: 1200 W heating element paired with over-temperature protection and current-limiting circuitry; compliant with IEC 61010-1 safety standards for laboratory equipment.

Sample Compatibility & Compliance

The DSHZ-300A accommodates common laboratory glassware and plastic containers—including borosilicate test tubes (10–50 mL), conical flasks (50–500 mL), and deep-well microplates—without requiring adapters. Its water bath geometry allows immersion of vessel bases up to 150 mm in depth. The system meets general-purpose requirements under ISO/IEC 17025 for calibration traceability of temperature and speed parameters. While not certified for GMP or FDA 21 CFR Part 11 out-of-the-box, its digital interface supports manual logging and time-stamped operational records suitable for GLP-compliant workflows when integrated into documented laboratory procedures.

Software & Data Management

This model features a standalone front-panel interface with LED display and tactile membrane keys—no external software or PC connection required. All operational parameters (set temperature, rpm, timer) are stored in non-volatile memory and retained after power cycling. Though it lacks USB or Ethernet connectivity, the intelligent controller logs real-time temperature deviation history internally for up to 72 hours (accessible via diagnostic mode), facilitating post-run verification of thermal fidelity. For audit-ready environments, users may pair the unit with external data loggers (e.g., compliant thermocouple-based recorders) to generate 21 CFR Part 11–compatible electronic records.

Applications

• Bacterial and yeast cultivation under controlled aerobic conditions
• Enzyme activity assays requiring simultaneous thermal stabilization and gentle mixing
• Solubility and dissolution testing per USP guidelines (when used with validated vessel configurations)
• DNA/RNA hybridization and probe labeling protocols
• Cell suspension maintenance during transfection or passaging
• Standardization of microbial growth media prior to inoculation
• Accelerated stability studies for pharmaceutical formulations in aqueous vehicles

FAQ

Is the DSHZ-300A suitable for use with volatile organic solvents?

No. The water bath design and sealed heater assembly are intended exclusively for aqueous solutions. Organic solvents pose fire, corrosion, and vapor pressure hazards incompatible with this platform.
Can the oscillation speed be synchronized with temperature ramping?

No. Speed and temperature are independently adjustable; no programmed ramping or interlocked profiles are supported.
What maintenance is required to ensure long-term accuracy?

Annual verification of temperature sensor calibration against a NIST-traceable reference thermometer is recommended. Regular cleaning of the water bath chamber with deionized water prevents mineral buildup affecting thermal response.
Does the unit include a lid or cover?

Yes—a transparent acrylic hinged lid is supplied to minimize evaporation and improve thermal efficiency during extended runs above 40 °C.
Is third-party calibration documentation available?

Calibration certificates (as per ISO/IEC 17025) can be provided by authorized service partners upon request, subject to additional lead time and fee.