Ordering activities shall establish the BPA with the schedule contractor(s) that can provide the supply or service that represents the best value. Our blanket purchase agreements establish an agreement between a government buyer and a MAS contractor to fill repetitive needs for supplies or services.THIS CONTRACT FOR SERVICES, is made and entered into on this 10 day of July ,. A blanket purchase agreement is a simplified method of filling anticipated repetitive needs for supplies or services. (1) The following contract items can be ordered under this Blanket Purchase Agreement: Computer. Tablets and Accessories. 53.213-90 Blanket purchase agreement delivery ticket (DLA Form 470).