MKN CHP-80 Water-Jacketed CO₂ Incubator

Overview

The MKN CHP-80 Water-Jacketed CO₂ Incubator is a precision-engineered environmental chamber designed for reliable, long-term cultivation of mammalian cells, primary tissues, hybridomas, and sensitive microbial strains under tightly controlled physiological conditions. It operates on the principle of dual-regulated gas and thermal environments: a water-jacketed heating system ensures exceptional thermal stability and minimal spatial temperature gradients, while an infrared (IR) or thermal conductivity-based CO₂ sensor—paired with proportional solenoid valve control—maintains precise gas concentration within the sealed chamber. This architecture minimizes overshoot, reduces recovery time after door opening, and supports adherence to GLP-compliant cell culture workflows in academic, pharmaceutical, and diagnostic laboratories.

Key Features

• Water-jacketed thermal design: Provides superior insulation and temperature uniformity across the entire chamber volume, reducing power consumption and enhancing reproducibility during extended incubation cycles.
• Dual-stage CO₂ filtration: Integrated particulate and hydrophobic gas filters ensure delivery of sterile, oil-free CO₂, mitigating contamination risk from supply lines and supporting ISO 13485-aligned cleanroom practices.
• Microprocessor-based digital controller: Features independent real-time display of chamber temperature and CO₂ concentration, with adjustable setpoints, alarm thresholds, and user-defined ramp profiles.
• Heated glass door: Prevents condensation formation during high-humidity operation, enabling uninterrupted visual monitoring without compromising internal environment integrity.
• Electropolished stainless steel interior: Constructed via argon arc welding with seamless, semi-circular corner transitions—designed for autoclave compatibility, chemical resistance, and ease of decontamination per CDC and ATCC biosafety guidelines.
• Acoustic-optical alarm system: Triggers audible and visual alerts upon deviation exceeding preset limits for temperature (±1°C), CO₂ concentration (±0.5%), or door-open duration (>60 s).

Sample Compatibility & Compliance

The CHP-80 accommodates standard tissue culture vessels including T-flasks (up to T-75), multi-well plates (6–96-well), Petri dishes, and roller bottles. Its stable CO₂ and humidity profile supports applications requiring strict pH regulation (e.g., bicarbonate-buffered media such as DMEM or RPMI-1640). The unit meets general safety requirements per IEC 61010-1 and complies with electromagnetic compatibility standards EN 61326-1. While not certified for Class II biological safety, it is routinely deployed upstream of biosafety cabinets in BSL-1 and BSL-2 workflows. Optional UV sterilization modules and copper-clad interiors are available for enhanced microbial control in GMP-aligned QC labs.

Software & Data Management

The embedded controller logs timestamped temperature and CO₂ data at user-selectable intervals (1–60 min) into non-volatile memory (≥30 days retention). Data export is supported via USB interface in CSV format for traceability and audit readiness. When integrated with laboratory information management systems (LIMS), the incubator’s analog/digital output ports enable remote status monitoring and event-triggered notifications. All configuration changes—including calibration offsets and alarm parameters—are recorded with operator ID and timestamp, satisfying FDA 21 CFR Part 11 requirements for electronic records when paired with validated access controls.

Applications

• Mammalian cell line maintenance (e.g., HEK293, CHO, HeLa) under 5% CO₂ and 37°C
• Stem cell expansion protocols requiring low thermal fluctuation and minimal shear stress
• Embryology and assisted reproductive technology (ART) culture stages
• Microbial culture of capnophilic organisms (e.g., Neisseria gonorrhoeae, Haemophilus influenzae)
• Antibody production in hybridoma cultures
• Pre-analytical sample conditioning for flow cytometry, ELISA, and qPCR workflows

FAQ

What type of CO₂ sensor does the CHP-80 use, and is calibration traceable to NIST standards?

The unit employs a solid-state thermal conductivity sensor with factory calibration documented against ISO/IEC 17025-accredited reference gases. Field recalibration is supported using certified 5% CO₂/N₂ gas mixtures.
Can the incubator maintain humidity above 95% RH without external humidification?

Yes—the natural evaporation system achieves ≥95% RH at 37°C; optional steam-generator upgrades support sustained >98% RH for specialized oocyte or blastocyst culture.
Is the water jacket accessible for periodic refilling and biocide treatment?

Yes—the rear-access fill port and drain valve allow routine maintenance using 0.1% sodium hypochlorite or hydrogen peroxide solutions per manufacturer-recommended intervals.
Does the controller support password-protected parameter locking for regulated environments?

Yes—three-tier user access (Operator, Technician, Administrator) enforces role-based restrictions on setpoint modification and calibration functions.
What is the typical CO₂ recovery time after a 15-second door opening at 5% setpoint?

Empirical testing shows full recovery to ±0.1% tolerance within 90 seconds under standard lab conditions (25°C ambient, 50% RH).