Review on 🌊 Digital Water Tester for TDS and pH Measurement by Christopher Meyer

Just received today and when I removed the tip from the pH reader there was a clear liquid in the cap as if someone had put it back in after use but never dried out. I know the directions say some sort of crystallization can occur, but there's nothing that can contain a transparent liquid, especially in such an amount, like 1/4 teaspoon of a mysterious transparent liquid with a strange smell. Because they are from China and this coronavirus is spreading, I couldn't use these after laying out all the other materials for my project.