Jihepu DHP9052 Electrically Heated Constant-Temperature Incubator

Overview

The Jihepu DHP9052 Electrically Heated Constant-Temperature Incubator is a precision-engineered laboratory incubation system designed for reliable, long-term maintenance of biological samples under tightly controlled thermal conditions. It operates on resistive electric film heating combined with PID-controlled microprocessor regulation to achieve stable temperature setpoints across its working range of RT+5°C to 65°C. Unlike steam-humidified or CO₂-dependent incubators, the DHP9052 is a dry-heat, non-sterile, ambient-humidity incubator—optimized for applications where moisture control is not required but thermal consistency and operational safety are critical. Its chamber features mirror-finish stainless steel construction for corrosion resistance, ease of decontamination, and minimal thermal mass, enabling rapid warm-up and high thermal recovery after door openings. The unit complies with general laboratory equipment safety standards for Class II electrical appliances (IEC 61010-1), and its independent over-temperature cut-off circuit provides fail-safe protection aligned with GLP-aligned operational risk mitigation protocols.

Key Features

• Microprocessor-based digital controller with 0.1°C resolution and programmable timer (1–9999 minutes), ensuring repeatable setpoint accuracy and unattended operation.
• Dual-door design: outer insulated door and inner tempered glass door for real-time visual monitoring without compromising thermal stability.
• Electric film heating element mounted on chamber walls—providing uniform heat distribution and eliminating hot spots common in coil-based systems.
• Mirror-finish 304 stainless steel interior with rounded corners and seamless welds to prevent microbial accumulation and simplify cleaning validation.
• Independent mechanical over-temperature limiter (optional configuration) that interrupts power independently of the main controller—meeting essential safety requirements for overnight or extended runs.
• Low thermal inertia architecture enables ≤15-minute stabilization from ambient to 37°C (tested at 20°C ambient, no load), supporting efficient daily workflow integration.

Sample Compatibility & Compliance

The DHP9052 supports standard microbiological and cell culture applications requiring stable, non-humidified thermal environments—including bacterial stock preservation (e.g., E. coli, Bacillus spp.), fungal cultivation, enzyme activity assays, and seed germination studies. It is compatible with standard Petri dishes, test tubes, multi-well plates, and flasks up to 500 mL placed on two adjustable stainless steel shelves. While not certified for ISO 14644 cleanroom use or USP compounding, the unit meets baseline requirements for educational and QA/QC laboratories operating under ISO/IEC 17025 or internal SOP frameworks. Its temperature uniformity (±0.5°C, measured per ASTM E145 Annex A3 methodology at three axial points) ensures reproducible growth kinetics across the full 53 L volume.

Software & Data Management

The DHP9052 operates via embedded firmware without external software dependency—ensuring robustness in resource-constrained or regulated environments where IT validation overhead must be minimized. All operational parameters (setpoint, actual temperature, timer status, alarm history) are displayed in real time on the LED interface. Though it lacks USB or Ethernet connectivity, the device supports manual calibration verification using NIST-traceable reference thermometers—a practice consistent with FDA 21 CFR Part 11 Annex A expectations for non-networked instruments. Audit trails are maintained via physical logbooks or LIMS-integrated manual entry, aligning with GLP documentation requirements for temperature-sensitive stability studies.

Applications

• Maintenance of bacterial and yeast cultures during routine subculturing and strain archiving.
• Incubation of agar plates for colony isolation and antimicrobial susceptibility testing (AST).
• Thermal profiling of enzymatic reactions and protein denaturation studies within the 25–60°C range.
• Controlled-temperature storage of reagents, media, and diagnostic kits requiring short-term ambient-elevated conditioning.
• Seed viability testing and plant tissue pre-incubation in agricultural research settings.
• Supporting ISO 8573-1 purity class verification workflows where thermal equilibration of sampling hardware is required.

FAQ

Is the DHP9052 suitable for CO₂-dependent cell culture?
No. This is a dry-heat, ambient-air incubator without gas regulation or humidity control—intended for non-CO₂-requiring organisms and processes.
Can humidity be increased beyond 50% RH?
No. The unit does not include a humidification system; ambient humidity remains passively dependent on lab conditions.
What is the validation protocol for temperature uniformity?
Users should perform three-point mapping (center + front-left + rear-right) using calibrated thermistors per ISO 14159 or internal SOP, recording deviations over a 3-hour dwell at 37°C.
Does the over-temperature alarm require separate calibration?
Yes—the optional mechanical limiter must be verified annually against a traceable reference source as part of preventive maintenance.
Are replacement shelves available separately?
Yes. Additional 304 stainless steel trays (410 × 360 mm) and height-adjustable support rails are offered as genuine Jihepu accessories.