The bottles supplied with colilert testing kits are also known for being:

The bottles supplied with colilert testing kits are classified as disposable. This means that they are meant to be used for a single testing event and then discarded, ensuring that cross-contamination between samples does not occur and that accurate results are obtained each time a test is conducted. The design of disposable bottles helps maintain the integrity of the sample by preventing any contaminants from previous tests from affecting the outcome.

In contrast, recyclable and reusable options would imply a process for cleaning and repurposing the bottles, which isn't typically feasible or recommended for testing kits due to sterility and contamination concerns. Standardized refers to a level of uniformity in size or function but does not specifically address the aspect of how these bottles are intended to be used. Hence, the focus on disposability is critical in the context of water testing environments to ensure safety and accuracy.