This service enables you to electronically pay to obtain a purchase receipt for the tests and services of the Government Center for Testing, Quality Control and Research. This service enables you to purchase a test or more through searching by item number, account, or test name. After you choose the required tests and determined their quantity and characteristics, you can pay electronically through KNET to obtain the purchase receipt. This receipt will enable conducting the tests directly upon visiting the Government Center for Testing, Quality Control and Research.