| The instruments perform a self-test every time they are switched on to always guarantee the specified accuracy of measurements. |
| The automatic self-test ensures that there are no errors of the electronics and optics. |
| The self-test would periodically find and eliminate incorrect answers, based on the responses that users provide, he said. |
| The self-test is to prevent information from one area generating an incorrect answer in another. |
| The woman I spoke to is considering buying a kit to test her pill before taking it, but self-test kits are not always accurate. |
| To help it achieve this goal the government has removed a restriction preventing the manufacture and sale of HIV home self-test kits. |
