Rectorseal
Better Bubble + (Plus) leak detector is formulated to pinpoint the smallest leaked quickly and easily. In a new and improved formula, Better Bubble + now features a more viscous formula allowing for longer bubbling times for longer inspection periods and covers both medium and low temp applications, ranging from -32 degrees C to +93 degrees C. Better Bubble Plus detects leaks of refrigerant gases, air and most other gases.
The thick formula can be used for various pressure applications with tubing, valves, tanks, A/C and refrigeration coils, and similar compatibility issues. Not to be used with oxygen.