JingHong DNP-9082 Electric Constant Temperature Incubator

Overview

The JingHong DNP-9082 Electric Constant Temperature Incubator is a precision-engineered laboratory incubation system designed for stable, uniform thermal environments essential in microbiological culture, cell maintenance, enzyme activity assays, and long-term sample storage. Based on resistive heating with six-surface direct heating architecture and forced-air convection, the unit ensures rapid thermal equilibration and minimal spatial gradient across its 80 L stainless-steel chamber. Its operating range spans from ambient +5 °C to 65 °C—covering standard mesophilic culturing conditions as well as elevated-temperature applications such as bacterial growth optimization or accelerated stability testing. The incubator complies with fundamental design principles outlined in ISO 13408-1 (aseptic processing), ASTM E171 (standard specifications for environmental chambers), and supports GLP-compliant workflows through traceable temperature control and stable setpoint retention.

Key Features

• Microprocessor-based PID temperature controller with dual digital display: one for setpoint, one for real-time chamber temperature—enabling precise adjustment and immediate visual verification.
• Six-surface direct heating system integrated into all interior walls and base, minimizing thermal lag and improving response time during setpoint changes or door openings.
• Forced convection airflow via low-noise axial fan ensures consistent air velocity distribution and reduces vertical/horizontal temperature gradients to ≤±0.5 °C across the full working volume.
• Dual-door configuration: outer door with magnetic seal and inner tempered glass door allows non-intrusive observation without compromising thermal integrity or introducing external drafts.
• Chamber constructed from mirror-finish 304 stainless steel with seamless, radius-rounded corners—resistant to corrosion, compatible with common lab disinfectants (e.g., 70% ethanol, 1% sodium hypochlorite), and fully autoclavable for decontamination cycles.
• Compact footprint (535 × 495 × 745 mm) optimized for benchtop integration in shared core facilities, teaching labs, and QC environments where space efficiency is critical.

Sample Compatibility & Compliance

The DNP-9082 accommodates standard microbiological vessels including Petri dishes (up to 150 mm diameter), test tubes (13–18 mm OD), multi-well plates (6–96-well), and flasks (Erlenmeyer up to 2 L). Its chamber geometry (400 × 400 × 500 mm internal) permits flexible rack configurations and optional shelf customization. The unit meets IEC 61010-1 safety requirements for laboratory electrical equipment and conforms to electromagnetic compatibility standards EN 61326-1. While not certified for medical device manufacturing under ISO 13485, it supports routine use in ISO/IEC 17025-accredited testing laboratories when operated within validated temperature ranges and maintained per manufacturer-recommended calibration intervals.

Software & Data Management

The DNP-9082 operates as a standalone analog-digital hybrid instrument with no built-in data logging or network interface. However, its analog voltage output (0–5 V or 4–20 mA, configurable via optional module) enables integration with third-party data acquisition systems (e.g., LabVIEW, WinCC, or PLC-based SCADA platforms) for continuous temperature monitoring and alarm triggering. For audit-ready documentation, users may pair the incubator with external calibrated thermistors or PT100 probes connected to validated chart recorders or electronic loggers compliant with FDA 21 CFR Part 11 requirements—including electronic signatures, user access controls, and immutable audit trails.

Applications

• Maintenance of bacterial, fungal, and yeast cultures under standardized aerobic conditions (e.g., Escherichia coli, Saccharomyces cerevisiae, Aspergillus niger)
• Enzyme kinetics studies requiring stable thermal environments between 30–60 °C
• Accelerated stability testing of pharmaceutical excipients and diagnostic reagents
• Pre-incubation of agar plates prior to inoculation in clinical microbiology workflows
• Storage of temperature-sensitive biological reagents (e.g., restriction enzymes, ligases, PCR master mixes)
• Supporting ISO 11133-compliant media performance testing in quality assurance laboratories

FAQ

What is the recommended calibration frequency for the DNP-9082?
Annual calibration using NIST-traceable reference thermometers is advised; more frequent verification (e.g., quarterly) is recommended in regulated environments or after mechanical impact.
Can the DNP-9082 be used for CO₂-sensitive applications?
No—this model lacks CO₂ regulation, humidification, or gas-tight sealing; it is strictly a dry, ambient-air incubator.
Is the chamber humidity controlled?
No—relative humidity is unregulated and will equilibrate with ambient lab conditions (typically 30–60% RH); optional external humidification modules are not supported.
Does the unit include over-temperature protection?
Yes—a redundant mechanical high-limit thermostat cuts power if chamber temperature exceeds 70 °C, independent of the main PID controller.
Are replacement shelves and accessories available?
Standard perforated stainless-steel shelves (400 × 400 mm) and adjustable-height support rails are available as OEM spare parts; custom racks require engineering consultation.