In this study, we extend the application of collaborative robotics to automate repetitive tasks involved in monitoring polymer materials exposed to solvents such as water. This is particularly critical for developing sustainable polymers and materials that are used in biomedical applications. Our primary setup enables the monitoring of numerous specimens immersed in a water bath, facilitating mass measurements and directing the samples to mechanical testing at predefined intervals. The system is enhanced with several custom-built accessories, including Arduino-controlled water replacement, temperature regulation, and specimen drying. The utility of this setup is demonstrated by monitoring water absorption in various nylon materials, as well as the Charpy impact strength of PLA specimens immersed in water.