Works Great, but Only When It Works

I have just reordered our third electrode replacement in the last 18 months. With a lot of people using the pH meter, we have experienced some issues with the solution cap not fitting well over the probe, allowing solution to evaporate and our probe to dehydrate. Otherwise, when the probe is working we love it for accurate and simple readings. Calibration is quick and easy. I just think the solution cap needs to be updated to better fit the probe so that it lasts longer.