The test method does not refer to regulations, but must be used extensively all over the world, and is the international standard if you are unsure, you can refer to this method.
The test method does not refer to the regulations. But have been widely used around the world. And standards if you are sure you can refer to this method.
Method of testing does not refer to the regulations. But widely used all over the world and international standard. If you are sure you can refer to this method