ZiQi ZSI-80A Tri-Gas Incubator

Overview

The ZiQi ZSI-80A Tri-Gas Incubator is an air-jacketed, microprocessor-controlled environmental chamber engineered for precise regulation of oxygen (O₂), carbon dioxide (CO₂), and temperature—critical parameters for hypoxic, normoxic, hyperoxic, and CO₂-dependent cell culture workflows. Unlike standard CO₂ incubators, the ZSI-80A enables independent, dynamic control of O₂ concentration from 0.1% to 100%, making it suitable for modeling physiological hypoxia (e.g., tumor microenvironments), ischemic conditions, stem cell expansion under low-O₂, or high-O₂ oxidative stress studies. Its air-jacketed architecture ensures rapid thermal recovery and minimal spatial gradients, while integrated humidity maintenance via stainless-steel water pan supports monolayer and 3D culture integrity without active humidification feedback control.

Key Features

• Triple-gas regulation with real-time, closed-loop control of O₂ (0.1–100% ±0.3%), CO₂ (0–20% ±0.3%), and temperature (ambient +3°C to 60°C ±0.2°C)
• High-stability sensing suite: NDIR infrared CO₂ sensor (no consumables, long-term drift 2 years under continuous operation), and calibrated PT1000 platinum resistance thermometers across five chamber walls plus door surface
• Intelligent gas sequencing logic: For O₂ 23%, pure O₂ is dosed prior to CO₂—ensuring cross-gas interference is minimized and target setpoints are achieved with high fidelity
• Micro-ventilation airflow system optimized for laminar-like distribution, reducing recovery time after door opening (<6 min for O₂/CO₂ stabilization at 37°C, ≤3 min for temperature return)
• Dedicated door temperature control circuit decouples external ambient fluctuations from chamber thermal stability—validated per ISO 13408-1 Annex C for incubator thermal robustness
• 5-inch industrial-grade PLC touchscreen interface with password-protected parameter locking, event logging (timestamped gas/temperature deviations), and configurable alarm thresholds
• Passive humidification via 304 stainless-steel evaporative water pan (≥90% RH typical at 37°C); seamless interior radius corners prevent microbial retention and simplify cleaning validation per CLSI M22-A3 guidelines
• UV-C sterilization module (254 nm, 15 W) with manual or programmable activation; optional upgrade path to fixed-position UVC LED array + Class II Type A2 HEPA recirculation system (EN 1822-1 compliant)

Sample Compatibility & Compliance

The ZSI-80A accommodates standard tissue-culture flasks (T25–T225), multiwell plates (6–96-well), Petri dishes, and roller bottles. Its uniform environment supports adherent and suspension cultures—including primary neurons, mesenchymal stem cells (MSCs), induced pluripotent stem cells (iPSCs), and anaerobic/microaerophilic bacterial strains requiring defined O₂ tension. The incubator complies with core design principles referenced in ISO 13408-1 (sterility assurance for cell culture devices), ASTM E1934 (performance testing of biological safety cabinets and incubators), and aligns with GLP documentation requirements through audit-ready data logging (user ID, timestamp, parameter changes). Optional dual-stage pressure regulators (0–0.25 MPa range) support integration into centralized lab gas networks meeting CGA G-1.1 standards.

Software & Data Management

Local control is managed via embedded PLC firmware supporting up to 999-hour timed cycles, user-defined ramp/soak profiles, and 3-level access control (operator, supervisor, engineer). All operational events—including door openings, gas injection pulses, sensor calibrations, and alarm triggers—are stored internally with UTC timestamps for ≥30 days. Data export is available via USB port in CSV format, compatible with LIMS platforms and FDA 21 CFR Part 11-compliant systems when paired with validated third-party electronic signature modules. Remote monitoring (optional Ethernet/WiFi add-on) provides SNMP-based alerts and real-time dashboard visualization via secure HTTPS endpoint.

Applications

• Hypoxia research: Modeling O₂ gradients in solid tumors (1–5% O₂), embryonic development (2–8% O₂), or chronic wound healing (0.5–10% O₂)
• Stem cell bioprocessing: Expansion of hematopoietic and neural progenitors under physiologically relevant O₂ tensions
• Microaerophilic microbiology: Cultivation of Campylobacter jejuni, Helicobacter pylori, and Fusobacterium nucleatum
• Regenerative medicine: Pre-conditioning of scaffolds and organoids prior to implantation
• Drug screening: Assessing compound efficacy under variable O₂/CO₂ conditions mimicking disease states
• IVF and assisted reproductive technology (ART): Embryo culture in low-O₂ environments shown to improve blastocyst formation rates

FAQ

What gas supply connections are required?
The ZSI-80A requires three independent medical-grade gas lines: compressed air (or N₂ for hypoxia), CO₂ (99.5% purity minimum), and O₂ (99.5% purity). Each line must be fitted with a dedicated single-stage regulator and particulate filter.
Is humidity actively controlled or monitored?
Humidity is maintained passively via natural evaporation from the stainless-steel water pan and is not actively regulated or digitally displayed. Typical equilibrium RH exceeds 90% at 37°C; users should monitor water level weekly to ensure continuity.
Can the incubator be validated for GMP use?
Yes—the ZSI-80A supports IQ/OQ protocols with traceable calibration certificates for all sensors (NIST-traceable PT1000, CO₂ and O₂ sensor calibration kits available). Full validation packages—including mapping reports, alarm response tests, and recovery time verification—can be executed using ZiQi’s certified field service engineers.
What safety interlocks are implemented?
Dual redundant overtemperature protection: primary microprocessor cutoff at +2°C above setpoint, secondary independent bimetallic relay at +5°C above setpoint. Door-open detection halts gas flow and ventilation, preventing uncontrolled atmospheric ingress and gas waste.
Is shaker functionality available?
An optional internal platform (ZSI-80A-SH) supports orbital shaking (30–300 rpm, 10–25 mm amplitude) compatible with Erlenmeyer flasks and spinner flasks—ideal for suspension cell bioreactor pre-culture.