Yiheng BISF-100C / BISF-300C Bio-Safe Low-Temperature Incubator

Overview

The Yiheng BISF-100C and BISF-300C Bio-Safe Low-Temperature Incubators are engineered for precision-controlled, contamination-resilient cell culture and microbiological applications requiring stable thermal environments across a broad operational range (4–65°C). Unlike standard incubators, these units integrate dual-path thermal management—air-jacketed heating for uniform chamber warming and high-efficiency compressor-based refrigeration for active sub-ambient cooling—enabling reliable maintenance of low-temperature physiological conditions (e.g., 4–10°C for primary cell storage or 25°C for insect cell culture) without condensation-induced microbial risks. The system employs Pt100 resistance temperature detectors (RTDs) with traceable calibration, six-surface air-jacket heating to eliminate cold spots and internal condensation, and cold-balance PID control with electronically actuated expansion valves—minimizing temperature fluctuation (<±0.1°C at setpoint) while reducing energy consumption by ≥30% versus conventional on/off refrigeration cycles.

Key Features

• Intuitive 7-inch color touchscreen interface with hierarchical menu navigation, password-protected parameter locking, and programmable timer functions for unattended operation.
• Electropolished 304 stainless-steel interior chamber with radius-rounded corners and electrochemically passivated surfaces—resistant to corrosion, biofilm adhesion, and compatible with common laboratory disinfectants (e.g., 70% ethanol, hydrogen peroxide vapor).
• Integrated HEPA (H14-class, ≥99.995% @ 0.3 µm) filtration in recirculating airflow path—ensuring continuous particulate and microbial removal; filter status monitoring with service alerts.
• Optional 90°C/95% RH saturated steam sterilization cycle—validated to achieve ≥6-log reduction of bacteria, fungi, mycoplasma, and spores across all internal components (including sensors, fans, shelves, and support rails); initiated via single-touch command with automated safety interlocks.
• Dual independent temperature sensing architecture: primary Pt100 RTD for process control + redundant over-temperature cutoff sensor—compliant with IEC 61000-4-2/4-4 immunity standards.
• Comprehensive alarm suite: high/low temperature deviation, sensor failure (primary and backup), door-open duration exceeding user-defined threshold (adjustable from 30 s to 10 min), and sterilization cycle status indicators.

Sample Compatibility & Compliance

Designed for long-term cultivation of mammalian, insect, and stem cell lines; bacterial and fungal cultures requiring precise low-temperature stabilization; and sensitive reagent storage (e.g., antibodies, enzymes, CRISPR components). Chamber geometry supports standard tissue culture flasks (T25–T225), multi-well plates (6–96-well), Petri dishes, and roller bottles. All materials comply with ISO 10993-5 (cytotoxicity) and USP Class VI biocompatibility requirements. Optional electronic signature and audit trail modules meet FDA 21 CFR Part 11 criteria for electronic records and signatures in regulated environments (GLP/GMP labs). CE marking per Directive 2014/30/EU (EMC) and 2014/35/EU (LVD) is applied.

Software & Data Management

Standard USB-A port enables export of time-stamped temperature logs (CSV format) with timestamps accurate to ±1 second. Optional Ethernet/Wi-Fi connectivity supports Modbus TCP and MQTT protocols for integration into centralized lab infrastructure (e.g., LabVantage, Thermo Fisher SampleManager). The optional mobile application provides real-time push notifications for alarm events, remote view-only access to current chamber status, and historical trend visualization (7-day rolling buffer). All data exports include device ID, firmware version, operator ID (if logged in), and UTC timestamp—supporting ALCOA+ data integrity principles.

Applications

• Low-temperature maintenance of primary human cells and induced pluripotent stem cells (iPSCs) at 4–10°C to suppress metabolic activity during transport or interim storage.
• Controlled hypothermic culture of thermosensitive cell lines (e.g., certain neuronal models) requiring sustained 25–30°C operation with minimal thermal drift.
• Microbiological work involving psychrotrophic pathogens (e.g., Listeria monocytogenes, Yersinia enterocolitica) requiring precise 4–8°C growth profiling.
• Stability testing of biologics under ICH Q5C guidelines, including accelerated and real-time storage conditions at 2–8°C and 25°C/60% RH equivalents.
• Pre-sterilization conditioning and post-sterilization cooldown phases in aseptic processing workflows compliant with ISO 14644-1 Class 5 environments.

FAQ

What is the lowest achievable temperature under typical laboratory ambient conditions (23 ± 2°C)?
The unit achieves 4°C minimum setpoint when ambient temperature is ≤23°C; performance degrades linearly above 23°C ambient—consult the technical datasheet for derating curves.
Is the HEPA filter replaceable, and what is its certified service life?
Yes—the H14 HEPA filter is user-replaceable and rated for 12 months of continuous operation under ISO 14644-1 Class 5 airflow conditions; replacement interval adjusts dynamically based on cumulative runtime and pressure-drop monitoring.
Does the 90°C sterilization cycle require external water supply or consumables?
No—the integrated steam generator uses distilled water reservoir (capacity: 1.2 L); no external plumbing or chemical agents are needed.
Can temperature data be exported in compliance with 21 CFR Part 11 Annex 11 requirements?
With the optional Electronic Signature & Audit Trail module enabled, yes—full electronic record retention includes user authentication, immutable timestamps, change history, and digital signature capture upon data export.
Are shelf configurations customizable for non-standard vessel types?
Standard shelves are adjustable in 25 mm increments; custom perforated or wire-mesh shelves can be ordered separately to accommodate specialized bioreactors or microcarrier systems.