Not that I’ve seen. You can set the time of day for the test. I set mine to 7pm.The system is designed to sample water once per day. In an established and balanced swimming pool, that’s all you really need. So a single cartridge could last 2 full months. A typical pool owner would probably need 2-3 test cartridges per season, more if you run your pool year-round.
Can you set the test frequency?