HVACR systems, brake lines, pneumatic systems, gas lines and systems, fuel lines, refrigerant-based EV thermal management systems, fire suppression systems, hydraulic circuits

1. Coat all surfaces with a flat liquid free of bubbles or foam. Focus on threaded connections, joints and valves. For more information, For more information, refer to our leak detection manual.
2. Bubbles will form instantly for most leaks, while micro leaks will develop foam cocoons or tiny bubble clusters over 5-30 minutes.
3. Place equipment back into operation and check for vibration leaks.
4. Wipe surfaces (or rinse if water is available).

• Big Blu Sub Zero is certified for use on any grade of gas, including hospital-grade oxygen. Big Blu is food industry compliant (NSF certified), biodegradable, non-toxic, non-flammable and does not contain chlorine, aliphatic amines, or ammonium compounds
• Oxygen safe: Unlike some competitors, Big Blu contains NO glycerine or other hydrocarbons that react with oxygen gas to produce heat, a very dangerous and possibly explosive situation