What is the hydrostatic test date of a cylinder marked with the numbers 12343 PST 6 96?

The correct interpretation of the hydrostatic test date marked on a cylinder is tied to the format of the numbers displayed. In this case, the "6 96" indicates that the cylinder was hydrostatically tested in June of 1996. The first digit represents the month, while the two digits following it reference the last two digits of the year.

Here, "6" is the sixth month, which is June, and "96" indicates the year 1996. Understanding this format is critical for ensuring the safety and regulatory compliance of the cylinder in question, as it informs you about when the last test for pressure integrity and safety was conducted. Knowing this test date ensures that the cylinder is within its valid testing period and can be safely used for diving operations.