Laboratory Refrigerators: Proper Use, Maintenance, and Calibration for Accurate Results
Laboratory refrigerators play a role in preserving temperature-sensitive samples, reagents and standards for accurate and reliable test results. Unlike household models, laboratory refrigerators are designed to maintain precise temperature ranges and require regular calibration. In this article, we’ll cover best practices for using, maintaining, and calibrating laboratory refrigerators to keep your lab running efficiently.
Why Use a Laboratory Refrigerator?
Laboratory refrigerators are essential for:
- Sample Preservation: Maintaining the stability of biological, chemical, and environmental samples before analysis.
- Temperature-Sensitive Standards: Protecting sensitive reagents and working standards from temperature fluctuations.
- Light-Sensitive Materials: Storing light-sensitive substances in dark pouches or amber vials to prevent degradation.
Best Practices for Laboratory Refrigerator Use
- Prevent cross-contamination: Store samples in sealed pouches or vials to reduce the risk of contamination.
- Effective labelling: Use moisture-resistant labels to ensure sample information remains clear, even in high-humidity conditions.
- Temperature control: Organize storage based on the specific temperature requirements of different chemicals and standards.
- Efficient Organization: Use labelled cabinets and maintain an accurate record of sample locations for faster retrieval.
- Regular Cleaning: Disconnect power and clean shelves regularly to prevent microbial growth and residue buildup.
Laboratory Refrigerator intermediate checks
Intermediate checks are important for maintaining accurate temperatures in laboratory refrigerators to ensure sample integrity and reliable test results. Use a calibrated thermometer in a silicone oil-filled beaker placed in various compartments:
- Cabinets: 2 to 8°C
- Freezers: -10 to -20°C
Important Safety Tip
Never store food or beverages in laboratory refrigerators. Cross-contamination from chemicals can lead to health risks.
