These convenient syringe-style testers are charged with a special concentrated dye that holds together underwater. Six-inch plastic "needle" allows for precise dye placement without creating unwanted currents.
•Identify the precise location of structural pool leaks
•Identify water movement into or out of pipes
•Can be refilled with Leakmaster Dye (available in 8 oz bottles)
•Available in blue (for light backgrounds) or fluorescent yellow (for dark backgrounds)