Overview Reviews Product Description This leak detector is formulated with a high viscosity so it can be used on vertical surfaces. Visu-Glow® is designed to detect leaks on CSST systems using its high-visibility fluorescent color, even in dimly lit areas. Markal - TEMPIL - LA-CO Catalog Product Videos Custom Field Product Reviews Write a Review Write a Review × Markal Visu-Glow® High Visibility Leak Detector 8oz Bottle 32898 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *