Used for testing the performance of my water softener and have proved to be very accurate. Early problems with the settings on the water softener have now been resolved by the installer and I have continued to use the strips to check that it continues to work properly.
Good service and great product. More convenient to use a battery charger for the spare battery than having to charge it in the camera. The adaptors came in useful on a recent holiday abroad. Have not yet used the car charger.