This January marks ten years since the launch of the Seaward Primetest PAT Tester series. In that time the range has changed but its basic tenets of usability, reliability, portability and accuracy have remained consistent. Nowadays, the range is made up of the Primetest 50, Primetest 100 and Primetest 250+ which offer the user the choice of a simple pass/fail indication, actual test results and internal result storage.