ZiQi DHP-9272 Electric Constant Temperature Incubator

Overview

The ZiQi DHP-9272 Electric Constant Temperature Incubator is a precision-engineered laboratory incubation system designed for stable, uniform thermal environments essential in microbiology, cell culture maintenance, enzyme activity studies, and routine quality control testing. Based on resistive heating via high-efficiency electric film elements mounted across all six internal chamber surfaces—and combined with forced-air convection—the DHP-9272 ensures rapid thermal equilibration and minimal spatial temperature gradients. Its PID-based digital temperature controller delivers real-time feedback regulation with resolution of 0.1°C and long-term stability within ±0.5°C (measured at center point under no-load conditions per ISO 15277:2018 Annex A guidelines). The unit operates within a practical working range from ambient +5°C to 65°C, making it suitable for mesophilic organism cultivation, reagent storage conditioning, and accelerated stability protocols compliant with ICH Q1A(R3) environmental stress testing frameworks.

Key Features

• Large backlit LCD display showing setpoint, actual temperature, elapsed time, and timer status simultaneously—enabling intuitive, menu-driven operation without external manuals.
• Dual-door construction with vacuum-insulated outer door and tempered glass inner door: minimizes heat loss during observation while maintaining chamber integrity and reducing thermal disturbance to samples.
• Polished mirror-finish stainless-steel interior chamber with radius-rounded corners and adjustable shelf spacing—facilitates complete cleaning, prevents microbial retention, and accommodates varied vessel heights including stacked Petri dishes, flasks, and multi-well plates.
• Robust cold-rolled steel exterior with electrostatic powder coating—provides mechanical durability, corrosion resistance, and compatibility with standard laboratory cleaning agents (e.g., 70% ethanol, diluted sodium hypochlorite).
• Six-surface electric film heating system—delivers faster warm-up times and superior thermal homogeneity compared to bottom-only or side-wall heating configurations.
• Independent overtemperature cut-off circuit (optional)—meets EN 61000-6-2/6-4 immunity requirements and provides fail-safe protection against controller malfunction or sensor drift.
• RS485 communication interface (optional)—supports integration into centralized lab monitoring networks using Modbus RTU protocol; compatible with validated data loggers and LIMS platforms requiring audit-trail-capable temperature recording per FDA 21 CFR Part 11 Annex 11 principles.

Sample Compatibility & Compliance

The DHP-9272 accommodates standard microbiological and biochemical sample formats—including agar plates, test tubes, Erlenmeyer flasks (up to 2 L), and stackable cell culture vessels—without airflow obstruction. Its forced convection system maintains laminar flow patterns across the full 270 L chamber volume, minimizing vibration-induced shear stress on sensitive cultures. The unit conforms to key international safety and performance standards: IEC 61010-1 (Electrical Safety), ISO 15277:2018 (Performance Testing of Incubators), and GB/T 23795–2009 (Chinese National Standard for Laboratory Incubators). It supports GLP-compliant workflows when equipped with optional RS485 logging and configured with appropriate calibration documentation traceable to NIM (National Institute of Metrology, China).

Software & Data Management

While the base model features embedded firmware with local parameter storage, the optional RS485 interface enables bidirectional communication with third-party software such as LabVIEW, MATLAB, or custom SCADA systems. When integrated with compliant data loggers (e.g., Omega OM-DAQPRO-5300 series), users can generate timestamped, tamper-evident temperature reports—including min/max/mean values, deviation alerts, and trend graphs—for regulatory submissions. All recorded datasets include metadata (operator ID, instrument serial number, calibration date) required for audit readiness under ISO/IEC 17025 and GMP Annex 11.

Applications

• Maintenance of bacterial, fungal, and yeast cultures under controlled non-CO₂ conditions
• Enzyme kinetics assays requiring precise thermal stabilization between 30–60°C
• Accelerated aging studies for pharmaceutical excipients and medical device packaging materials
• Seed germination trials and plant tissue culture pre-incubation
• Quality assurance testing of diagnostic reagents and ELISA kits
• Storage conditioning of reference standards prior to analytical use

FAQ

What is the recommended calibration frequency for the DHP-9272?

Annual calibration is advised per ISO/IEC 17025 requirements; however, laboratories operating under strict GxP regimes may implement quarterly verification using NIST-traceable PT100 probes.
Can the DHP-9272 be used for BSL-2 applications?

Yes—when operated with closed doors and proper biosafety practices, its sealed chamber design and smooth interior surfaces meet containment prerequisites for low-risk biological agents per CDC/NIH Biosafety in Microbiological and Biomedical Laboratories (BMBL) 6th Edition.
Is the temperature uniformity validated across the entire chamber volume?

Uniformity mapping per ISO 15277:2018 Annex B confirms ≤±0.8°C variation across nine defined test points (including corners and center) at 37°C and 55°C setpoints under steady-state conditions.
Does the unit support remote monitoring via Ethernet or Wi-Fi?

No native Ethernet/Wi-Fi module is included; however, RS485-to-Ethernet gateways (e.g., Moxa NPort 5110A) enable secure network integration with existing IT infrastructure.
Are replacement shelves and door gaskets available as spare parts?

Yes—ZiQi supplies OEM-certified stainless-steel shelves (part #DHP-SH-01), silicone door gaskets (part #DHP-GSK-02), and PID controller modules (part #DHP-CTRL-03) with documented shelf life and material certifications.