When white rust appears on the part, the test should be ended.

Even if white rust is seen before the time specified in the specification, let the test continue until the desired time for red rust.

When the white rust time specified in the specification expires, the test should be ended.

When red rust appears on the part, the test should be ended.

When the red rust time specified in the specification expires, the test should be ended.

Even if conformity is achieved within the periods specified in the specification, let the test continue until red rust is seen.

Take the part out after ……. hours.