DRETOP ZGP Series Water-Jacketed Constant Temperature Incubator

Overview

The DRETOP ZGP Series Water-Jacketed Constant Temperature Incubator is engineered for stable, long-duration thermal environments required in microbiological culture, cell propagation, enzymatic reaction studies, and fermentation process development. Unlike forced-air incubators, the ZGP series employs a water-jacketed heating architecture—where a sealed outer chamber is filled with deionized or distilled water and heated via embedded electric heating elements. This design leverages water’s high specific heat capacity and thermal inertia to deliver exceptional temperature stability and minimal spatial gradients across the working chamber. The system maintains uniform thermal conditions even during brief power interruptions, making it particularly suitable for sensitive biological assays where thermal shock must be avoided. Designed for compliance with standard laboratory workflows in GLP- and GMP-aligned facilities, the ZGP series supports reproducible incubation under controlled environmental conditions per ISO 13408-1 (sterile processing), USP , and ASTM E1267 (performance testing of incubators).

Key Features

• Water-jacketed thermal architecture with integrated overflow safety valve and dedicated inlet/outlet ports for easy, spill-free water filling and maintenance;
• Digital PID temperature controller with 0.1°C resolution, real-time display of setpoint, actual temperature, and elapsed time on a backlit LCD screen;
• Forced convection airflow system with optimized duct geometry and rear-mounted centrifugal fan to ensure ±0.5°C temperature uniformity (measured at nine points in empty chamber per ASTM E1267);
• Stainless steel interior chamber (304 grade) with removable, height-adjustable stainless steel shelves; seamless corners and smooth-welded seams prevent microbial entrapment;
• Double-door observation window: inner tempered glass panel with anti-fog coating, outer magnetic door seal providing low-thermal-conductivity closure and enhanced insulation;
• Robust exterior housing with electrostatic powder-coated steel finish; ergonomic rounded corner design improves structural integrity and cleaning accessibility;
• Comprehensive safety suite including over-temperature cut-off (independent mechanical thermostat), power-failure memory retention, audible/visual high-temperature alarm, and grounded heating film distributed uniformly along the inner jacket perimeter.

Sample Compatibility & Compliance

The ZGP series accommodates standard microbiological vessels—including Petri dishes, test tubes, flasks, multiwell plates, and roller bottles—without interference from airflow turbulence or thermal stratification. Its water-jacketed construction eliminates direct radiant heating effects common in air-heated units, reducing desiccation risk for non-humidified cultures. All models comply with IEC 61010-1 (safety requirements for electrical equipment) and meet electromagnetic compatibility standards per EN 61326-1. Optional UV-C germicidal irradiation (254 nm) enables periodic chamber decontamination between runs, supporting ISO 14644-1 Class 7 cleanroom-compatible operation when installed in controlled environments.

Software & Data Management

While the base configuration features standalone digital control, optional RS485 serial interface enables integration with centralized lab monitoring systems (e.g., LabVantage, Siemens Desigo, or custom SCADA platforms) for remote parameter adjustment, real-time logging, and alarm event forwarding. The programmable controller variant supports up to 30 segmented temperature/time profiles with ramp-soak cycles, ideal for simulating diurnal or fermentation-phase transitions. Audit-trail-capable data export (via optional micro-printer or USB dongle) satisfies FDA 21 CFR Part 11 requirements when paired with validated electronic record software. Temperature logs are timestamped and stored internally for ≥30 days without external storage.

Applications

• Bacterial and fungal cultivation in clinical diagnostics and pharmaceutical QC labs;
• Mammalian and insect cell line maintenance in academic and biotech research settings;
• Enzyme activity assays requiring precise thermal stabilization over extended durations;
• Vaccine production support workflows, including seed train expansion and antigen stability testing;
• Agricultural microbiology applications such as rhizobial inoculant development and soil microbial respiration studies;
• Regulatory stability testing per ICH Q1A(R2) guidelines under long-term and accelerated conditions (when combined with humidity control accessories).

FAQ

What type of water should be used in the water jacket?
Deionized or distilled water is strongly recommended to prevent mineral deposition and corrosion of the jacket interior. Tap water may be used temporarily but requires quarterly descaling maintenance.
Is the ZGP series suitable for CO₂-sensitive applications?
No—this is a non-humidified, non-CO₂-controlled unit. For CO₂-dependent cultures (e.g., primary mammalian cells), consider DRETOP’s complementary CO₂ incubator line (e.g., ZQX Series) with IR-based gas sensing and humidification modules.
How often does the water jacket require refilling or replacement?
Under normal operation and ambient temperatures ≤30°C, evaporation loss is negligible (<2% volume/month). Refill only when the level indicator falls below the minimum mark; full replacement is advised every 6 months or after any contamination incident.
Can the incubator be validated for GMP use?
Yes—the ZGP series supports IQ/OQ documentation packages, and its temperature uniformity, stability, and alarm response times can be verified per WHO TRS 961 Annex 6 and EU GMP Annex 15 protocols using calibrated thermocouple mapping systems.
What certifications does the ZGP series carry?
CE marking (per Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU), RoHS 2011/65/EU compliance, and factory-issued calibration certificate traceable to NIM (National Institute of Metrology, China).