JingHong DNP-9052 Electric Constant Temperature Incubator

Overview

The JingHong DNP-9052 Electric Constant Temperature Incubator is an entry-level, precision-engineered benchtop incubation system designed for routine microbiological culture, cell maintenance, enzyme activity assays, and short-term sample storage in academic laboratories, pharmaceutical QC environments, and biotechnology research units. It operates on the principle of forced-air convection combined with six-surface direct heating—ensuring rapid thermal response and minimizing vertical and horizontal temperature gradients across the working chamber. Unlike natural convection models, the integrated axial fan delivers consistent airflow at calibrated velocity, reducing boundary-layer stagnation and improving heat transfer efficiency. The unit is optimized for stable operation within the biologically relevant range of RT + 5°C to 65°C, making it suitable for mesophilic bacterial growth (e.g., E. coli, Bacillus subtilis), fungal propagation, and ambient-temperature stability testing of reagents or diagnostic kits.

Key Features

• Microprocessor-based PID temperature controller with dual digital display: one for setpoint, one for real-time chamber temperature—enabling immediate visual verification and eliminating manual calibration drift.
• Six-surface heating elements embedded in all interior walls and floor, delivering uniform thermal input and minimizing cold spots near corners or door seals.
• Dual-door architecture: outer door with high-density insulation and inner door constructed from fully tempered glass—allowing non-intrusive observation without compromising thermal stability or increasing recovery time after door opening.
• Chamber constructed from electropolished 304 stainless steel with seamless, radius-rounded corners (R ≥ 10 mm) to prevent microbial entrapment and facilitate ISO 14644-compliant cleaning protocols.
• Front-panel accessible ventilation port with adjustable aperture, supporting passive humidity retention or integration with external desiccant systems where low-moisture environments are required.
• Over-temperature safety cutoff (independent of main controller) with audible alarm and automatic power disconnection at 70°C—compliant with IEC 61010-1 Class II safety requirements.

Sample Compatibility & Compliance

The DNP-9052 accommodates standard laboratory vessels including Petri dishes (up to 150 mm diameter), multi-well plates (6–96-well), culture flasks (T25–T75), and glass test tubes (13 × 100 mm). Its 50 L internal volume supports up to four stacked stainless-steel wire shelves (included), each rated for 15 kg static load. The unit meets essential electrical safety standards (IEC 61010-1, GB 4793.1) and conforms to environmental operating conditions per ISO 13485 Annex A for medical device-related lab equipment. While not certified for GMP-grade sterile processing, its design supports GLP-aligned documentation practices—including manual logbook entries for temperature validation cycles and daily operational checks. Optional traceable NIST-calibrated thermometer probes (not included) may be used to satisfy internal audit requirements under FDA 21 CFR Part 11 when paired with validated paper-based recordkeeping.

Software & Data Management

The DNP-9052 operates as a standalone analog-digital hybrid instrument with no embedded data logging or network interface. All operational parameters—including setpoint, actual temperature, elapsed time, and fault codes—are displayed locally via a 3-digit LED readout. For regulatory traceability, users are advised to integrate external USB or Bluetooth-enabled data loggers (e.g., HOBO UX100-003, Testo 176 T4) connected to the chamber’s auxiliary sensor port (0–5 V analog output, configurable for temperature). This configuration enables CSV export, trend analysis in Excel or LabChart, and alignment with SOP-driven calibration intervals defined in ISO/IEC 17025 Clause 6.4. No proprietary software is required, ensuring long-term maintainability and compatibility with legacy IT infrastructure.

Applications

• Routine cultivation of non-fastidious microorganisms in teaching labs and contract testing facilities.
• Incubation of agar plates during antibiotic susceptibility testing (AST) per CLSI M02-A13 guidelines.
• Stabilization of enzymatic reagents prior to spectrophotometric assay (e.g., LDH, ALP, AST).
• Accelerated stability studies for pharmaceutical excipients under ICH Q1A(R3) intermediate storage conditions (30°C ± 2°C / 65% RH ± 5% RH, when used with optional humidity control add-on).
• Pre-warming of media bottles and buffer solutions in molecular biology workflows.
• Short-term holding of hybridoma cultures between passage steps in monoclonal antibody development pipelines.

FAQ

Does the DNP-9052 support humidity control?
No—this model is strictly a dry-air constant-temperature incubator. Humidity management requires external humidification modules or separate humidified incubators (e.g., JingHong HP series).
Is the chamber temperature validated across the full volume?
Yes—temperature uniformity (±0.5°C) and fluctuation (±0.5°C) are verified at nine standardized points (per ASTM E145-22 Annex A3) during factory acceptance testing.
Can the unit be stacked or installed in enclosed cabinetry?
No—minimum rear clearance of 100 mm and side clearance of 50 mm are mandatory for heat dissipation; installation in confined spaces voids warranty and risks thermal shutdown.
What is the recommended calibration frequency?
Annual verification using a NIST-traceable reference thermometer is advised for GLP compliance; more frequent checks (e.g., quarterly) are required if used in regulated QC environments.
Are replacement shelves and door gaskets available as spare parts?
Yes—stainless-steel shelves (Part No. DNP-SH50), silicone door gaskets (Part No. DNP-GSKT), and PID controller modules (Part No. DNP-PID-9052) are stocked and shipped globally within 5 business days.