Green Tracing Dye - Highly Visible Concentrated Fluorescent Leak Detection Dye - 1 Gallon

This stuff works fantastic. We used it to find a anti-freeze leak. We tested pressure tested the system saw nothing. We put in about a 1/8 of a cup of this dye started the engine and within 30 seconds the seal at the top of the radiator turned green.

Surprised how well just a bit worked. Clearly visible.

I used this in a Halloween prop to make a bio hazard liquid, Product worked very well, made a great contrast in color especially adding a black light.I used a 1/2 a cup to 5 gallons of water which was excellent.1 gallon will last several Halloweens.

Worked great for plumbing tracing. It was so bright I didn't need uv light. For the 1 star review about it being orange, it turns from orange to green when added to water.

Worked very well for my Halloween decoration.

The media could not be loaded. Worked perfectly for my Halloween decor. Be careful though it does stain!

Perfect dye for leak detection or other creative uses. A little goes a very long way, so use it sparingly, but there's no better product for dye tracing! The dilution instructions on the bottle are easy to read, and the brightness of the dye is surprisingly strong. Easy to use, but will stain any clothing, so be very careful.

Bright florescent green! You can't miss it! Used it for a Halloween project and looks great with a black/UV light. Would purchase again when needed