Jiayuan THZ-82A Water Bath Orbital Shaker

Overview

The Jiayuan THZ-82A Water Bath Orbital Shaker integrates precise temperature regulation with controlled orbital agitation in a single benchtop platform. Engineered for reproducible incubation and suspension culture, it operates on the principle of orbital motion—generating gentle yet uniform circular displacement (20 mm amplitude) to maintain homogeneous suspension of biological samples without foaming or splashing. The water bath chamber provides superior thermal uniformity and stability compared to air-jacketed shakers, especially critical for heat-sensitive cell cultures, enzyme assays, solubility studies, and immunochemical reactions requiring both constant temperature (ambient to 100 °C) and mechanical mixing. Its stainless steel inner tank ensures long-term corrosion resistance in aqueous environments, while the digitally regulated PID temperature controller maintains setpoint accuracy within ±0.5 °C—meeting baseline requirements for GLP-compliant sample preparation workflows in academic, pharmaceutical, and diagnostic laboratories.

Key Features

• Digital PID temperature control with real-time LED display and ±0.5 °C stability across the full 0–100 °C range
• Stepless speed adjustment from 0 to 300 rpm via precision potentiometer, enabling fine-tuned optimization for delicate suspensions or viscous media
• Single-tier stainless steel (SUS304) platform with universal spring-loaded clamping system—compatible with Erlenmeyer flasks (50–2000 mL), test tubes, and multi-well plates
• Mechanical timer with 0–120 minute range and “continuous run” mode; non-volatile setting retention during power interruption
• Low-splash orbital motion design minimizes surface agitation and condensate formation, reducing contamination risk and evaporation loss
• Integrated overheat protection and dry-run prevention circuitry safeguards heater and motor under abnormal operating conditions
• Front-accessible water level indicator and drain valve simplify maintenance and fluid replacement

Sample Compatibility & Compliance

The THZ-82A accommodates standard laboratory glassware and plastic vessels up to 2 L volume per container, with load distribution optimized for balanced rotation and minimal vibration transmission. Its stainless steel chamber meets ISO 8573-1 cleanliness class 5 compatibility for low-particulate environments and resists degradation from repeated exposure to saline buffers, PBS, Tris-HCl, and mild detergents. While not certified to IEC 61010-1 or UL 61010B out-of-the-box, the unit conforms to fundamental electrical safety and thermal hazard mitigation principles expected in Class II laboratory equipment. It supports method validation under ASTM E2500 (Guide for Specification, Design, and Verification of Pharmaceutical and Biopharmaceutical Manufacturing Systems) when integrated into documented SOPs for microbial growth, protein expression, or reagent equilibration protocols.

Software & Data Management

The THZ-82A is a standalone analog-digital hybrid instrument with no embedded microprocessor or network interface. All operational parameters—including temperature setpoint, rotational speed, and timer duration—are configured manually via front-panel controls and verified via local LED readouts. This architecture eliminates firmware dependencies, ensuring deterministic behavior and eliminating cybersecurity risks associated with connected devices. For laboratories requiring audit trails, users may pair the shaker with external data loggers (e.g., HOBO UX100 series) connected to the temperature sensor output (0–5 V analog signal available upon request). The absence of electronic storage aligns with FDA 21 CFR Part 11 “paper-based record” compliance pathways when used in conjunction with bound lab notebooks and signed calibration logs.

Applications

• Microbial cultivation (E. coli, yeast, Bacillus spp.) under controlled thermal and aeration conditions
• Antibiotic susceptibility testing via broth microdilution in CLSI-compliant formats
• Antigen-antibody binding kinetics in ELISA plate pre-incubation steps
• Solubility profiling of small-molecule APIs across temperature gradients (25–85 °C)
• Cell lysis optimization using enzymatic or detergent-based protocols requiring gentle agitation
• Standardization of calibration standards for spectrophotometric and fluorometric assays
• Preparation of homogenous suspensions for particle size analysis (e.g., dynamic light scattering sample loading)

FAQ

What is the maximum recommended load capacity for the THZ-82A platform?
The single stainless steel tray supports up to 15 kg distributed evenly across compatible vessels—equivalent to twelve 500 mL Erlenmeyer flasks filled to 75% capacity.
Can the unit operate continuously beyond 120 minutes?
Yes—rotational and thermal functions remain active indefinitely when the timer is set to “continuous” mode; only the mechanical countdown ceases.
Is deionized water required for operation?
Distilled or deionized water is strongly recommended to prevent scale buildup on the heating element and extend service intervals between descaling cycles.
Does the shaker include a CO₂ or humidity control option?
No—this is a strictly temperature- and agitation-controlled water bath system; environmental gas modulation requires integration with external incubation chambers.
How often should the drive bearing be lubricated?
Every six months under continuous use, using NLGI #1 calcium-sodium base grease; volume should fill approximately one-third of the bearing cavity.