19.2. Despite section 19.1, a respiratory therapist is not in a situation of conflict of interest if the respiratory therapist accepts a discount from a supplier because of(1) normal prompt payment, if the discount appears on the invoice and is in keeping with customary market practices in such matters; or
(2) the volume of purchases of products other than medications, if the discount appears on the invoice or statement of account and is in keeping with customary market practices in such matters.