Kolor Kut Water Finding Paste is used to test for the presence of water in the bottom of oil tanks. The brown paste can be applied to string or a rod and lowered into the tank, when it comes in contact with water the paste will turn red.
The Waterra Surge Blocks are great tools for removing silt and sediment from the bottom, sandpack and screen of monitoring wells. The SBD-25 surge blocks are designed for use with the D-25 foot valve, the SBD-32 surge blocks are designed for use with the D-32 foot valve. Each surge block has two differing sizes, one for 2" wells and the other for 4" wells.