MKN GHP-80 Water-Jacketed Temperature-Controlled Incubator

Overview

The MKN GHP-80 Water-Jacketed Temperature-Controlled Incubator is a precision-engineered, passively stabilized thermal environment system designed for sustained, uniform temperature maintenance in life science laboratories. Unlike forced-air incubators, the GHP-80 employs a circulating water jacket surrounding the inner chamber—providing superior thermal inertia, minimal temperature fluctuation (< ±0.3 °C typical under steady-state conditions), and inherent protection against overshoot during power recovery or setpoint changes. This architecture is particularly critical for sensitive applications such as microbial culture preservation, embryonic cell line maintenance, and long-term stability testing where thermal perturbation must be minimized. The unit operates without integrated humidification hardware; it is intended for dry-heat or low-humidity applications unless externally coupled with a regulated moisture source. Its robust stainless steel water jacket—fabricated via tungsten inert gas (TIG) welding—ensures corrosion resistance, structural integrity, and long-term fluid containment compliance.

Key Features

• Water-jacketed thermal design delivering high thermal mass and exceptional temperature stability across the full operating range (typically 5 °C above ambient to 60 °C)
• Microprocessor-based digital temperature controller with LED display, ±0.1 °C resolution, and programmable setpoint memory
• Dual-layer tempered glass observation door with high-efficiency silicone rubber gasket—minimizing heat loss and maintaining internal conditions during visual inspection
• Independent water-level monitoring circuit triggering simultaneous audible and visual alarms upon low or overflow conditions
• Externally mounted heating elements isolating thermal generation from the chamber interior—eliminating radiant hot spots and ensuring uniform heat distribution
• Stainless steel inner chamber and TIG-welded water jacket meeting ISO 13485 material traceability and cleanability requirements for Class IIa medical support equipment

Sample Compatibility & Compliance

The GHP-80 supports standard microbiological and cell culture vessels—including Petri dishes, multi-well plates, flasks, and test tubes—without interference from airflow or vibration. Its static thermal environment eliminates convective shear stress on delicate colonies or adherent monolayers. While not equipped with active humidity control, the unit complies with ASTM E1251–22 (Standard Practice for Calibration of Laboratory Incubators) when operated within its validated temperature range. It satisfies foundational requirements for Good Laboratory Practice (GLP) environments per OECD Series 125 and supports audit readiness for ISO/IEC 17025-accredited testing laboratories. All electrical components conform to IEC 61010-1:2010 safety standards for laboratory equipment.

Software & Data Management

The GHP-80 operates via embedded firmware with no external software dependency. Temperature logging is manual by default; however, the analog output (0–5 V DC) enables integration with third-party data acquisition systems (e.g., LabVIEW, Delta Tau PMAC) for continuous monitoring and CSV export. Optional RS-485 Modbus RTU interface (available upon request) supports centralized HVAC or facility management systems compliant with BACnet MS/TP protocols. Audit trails are maintained through physical logbook entries or external electronic lab notebook (ELN) synchronization—fully compatible with FDA 21 CFR Part 11 requirements when paired with validated timestamping and user-access controls.

Applications

• Long-term storage and revival of bacterial, fungal, and yeast stock cultures (ATCC, DSMZ strains)
• Incubation of diagnostic media (e.g., blood agar, MacConkey agar) in clinical microbiology workflows
• Thermal validation studies for sterilization process development (e.g., depyrogenation cycle mapping)
• Stability assessment of biologics, vaccines, and excipients per ICH Q5C guidelines
• Plant tissue culture initiation and callus propagation under controlled thermal conditions
• Enzyme activity assays requiring precise, drift-free incubation at sub-physiological temperatures

FAQ

Does the GHP-80 include built-in humidity control?

No. The GHP-80 is a dry-heat water-jacketed incubator. Humidity regulation requires external humidification modules or placement within a climate-controlled room.
What is the maximum allowable ambient temperature for safe operation?

The unit is rated for use in environments up to 32 °C ambient with ≤70% RH. Operation above this threshold may impair cooling capacity and extend stabilization time.
Is the water jacket fill port accessible without disassembly?

Yes—the top-mounted, quick-release cap allows direct filling and periodic deionized water replenishment without tools or chamber access.
Can the GHP-80 be validated for IQ/OQ/PQ protocols?

Yes. Its mechanical simplicity, stable thermal profile, and analog/digital I/O interfaces support full qualification per GAMP 5 Annex 11 and EU Annex 15 frameworks.
What maintenance intervals are recommended for long-term reliability?

Biannual inspection of water jacket integrity, annual calibration of the temperature sensor (PT100 class B), and quarterly verification of alarm functionality using NIST-traceable reference sources.