How many times can you spot the letter h in:
Practice the procedures, especially the closing and opening of the autoclave door, without introducing any steam into the autoclave chamber until the entire sequence can be performed without any difficulty. The student is authorized to use the autoclave only after he has demonstrated to the instructor his ability without referring back to this write-up. Do not use the autoclave if the student is not absolutely sure of the proper operating procedures. The pressurized steam is more likely to cause burns than boiling water. First, it is hotter than boiling water. The temperature and pressure relationship is shown in the following table. More importantly, the heat of vaporization released upon the condensation of steam causes much severer damage than does the same quantity of boiling water. Always watch out for the hot metal parts on the autoclave. Wear heat insulating (asbestos) gloves when handling hot autoclaved items.
Around the working range of 15 psi, each psi raises the autoclave temperature by approximately 1ºC.
1. Check the jacket pressure.
4. Place items in the chamber.
5. Close and lock the autoclave door.
6. Introduce steam into the chamber.
7. Autoclave for 20-30 minutes.
8. Unlock and open the autoclave door.
9. Remove autoclaved items from the chamber.

user
The given text has fifty-five "h"s.
assistant