Inconsistent results – JBL PROSCAN Review

The app struggles to do a screen capture and complains about test strip alignment even when alignment is perfect. Eventually it grabs the image but by then elapsed time makes the test result error prone. Taking repeated tests in succession the results of NO3, NO2, pH, Chlorine and CO2 all differed from each other and none matched the water chemistry analysis using reagents and test tubes. Using this app on average it skews pH about 0.2 too low and NO2 results are over-reading. As a consequence I don't have confidence in trusting test results for other parameters from this app and using them as a basis for adjusting tank practice.
Review by Pa30crewchief on JBL PROSCAN.