• The Hach SL1000 Portable Parallel Analyzer (PPA) performs the same tests with less than half the manual steps. Get highly accurate results, with less opportunity for errors, in a fraction of the time. Up to six parameters, tested in parallel. The SL1000 is a portable colorimeter that provides 75% faster testing in chloramination applications by using chemkey reagents instead of powder pillows. All chemicals and processes are entirely contained inside the Chemkey.