How should sample containers be prepared according to best practices for handling?

Preparing sample containers according to best practices is crucial for ensuring the integrity of the samples collected for asbestos inspection. The correct approach involves double sealing the containers to prevent any leakage. This method provides an extra layer of security against contamination and the potential loss of sample integrity, which is vital in analyses that follow.

Double sealing typically involves using an inner seal, such as a tightly fitted lid or a sealable plastic bag, and an outer seal, like tape or a secondary container. This approach greatly reduces the risk of the sample being compromised by environmental factors or mishandling during transport to the laboratory. Ensuring that samples are properly sealed helps maintain accurate and reliable results when conducting tests for asbestos identification.

In contrast, the other options present methods that could lead to contamination or sample degradation. Unsealed and reused containers lack the necessary protection, open containers pose risks of environmental contamination, and single sealed containers without labels are not functional for tracking and identifying samples, which can lead to confusion and potential errors in analysis. The emphasis on double sealing underscores the importance of following protocols that safeguard the quality of samples in asbestos testing.