Dynaflux DF315KIT-S Crack Check 4 Piece Standard Kit, Non-Flammable

good product I had to Dye check a spar on a rudder for an airplane looking at the spar it looked like everything was good even under magnification after using this dye check product it revealed a small crack, I was surprised to see the crack but this product brought it out. it was easy to see after applying this product

Instructions should be more detailed, with pictures. A troubleshooting section would also be appropriate. This stuff works great if you happen to follow the exact correct procedure.

This was a life saver. I did find a microscopic crack in an aluminum weld with this stuff in a critical area. It's easy to use, works quickly, and is effective.

Product works great. It is just what we were looking for

Works like it’s supposed to.

We ordered these routinely as part of a bridge inspection course that we teach.

Works just great as it always has. Instructions are the same as they always have been.