The use of transfer containers that are open to the air are considered:

Transfer containers that are open to the air are considered not best practice due to the potential for contamination of the lubricant they are holding. When containers are exposed to the atmosphere, they can allow for the ingress of moisture, dust, and debris, which can degrade the quality of the lubricant. Contaminated lubricants can lead to reduced performance, increased wear and tear on machinery, and ultimately equipment failure.

Best practices in lubrication management recommend using closed transfer systems to minimize exposure to environmental contaminants and maintain the integrity of the lubricant. By ensuring that lubricants are stored and handled in sealed, clean containers, organizations can uphold equipment reliability and longevity. Therefore, using open transfer containers is not aligned with these best practices and can compromise the effectiveness of lubrication in machinery.