Always remember 'DIN goes IN!"

The Deutsche Industrie Norm or DIN connection is a design the screws into the cylinder valve itself. This means they are rated for higher working pressure than their Yoke counterparts and are indispensable for colder water and technical diving. 

Want to learn more about equipment in diving? Message me and I'll see how I can help. 

Each tissue compartment contains 6 halftimes until it is considered saturated. This means that if the tissue compartments halftime is 60 minutes the equation would be 6x60=360 minutyes, or 6 hours.

These kinds of questions often catch people out who assume the question is looking for the partial pressure of the gas. 

When you're at your exams for either PADI Divemaster, PADI Instructor Course, PADI Staff Instructor or even PADI Course Director prep, take your time and read each question thoroughly. Trust me, there's time!

The question, in fact, is just asking what the percentage of the gas is if the cylinder is at the depth listed. The content of the cylinders mix won't alter regardless of what depth it is.

When an air bubble enters an artery, it's called an arterial air embolism. These air bubbles can travel to your brain, heart, or lungs and cause a heart attack, stroke, or respiratory failure.

Definitions are always found in the Training Standards of the PADI Instructor Manual. This covers all generalities but if you require specific details from an individual program such as additional equipment requirements for that program, head to the first section of that program and the additional information will be found there.