Tempil 24428 Temperature Indicating Liquid 1000 Degrees F

Product Description

The TEMPIL 24428 is a temperature-indicating liquid used to verify surface temperatures during heating, brazing, soldering, and heat-treat operations. Applied directly to metal or glass surfaces, it melts and leaves a distinct, visible mark when the substrate reaches 1000 degrees F (538 degrees C). The fast-drying formula adheres to both horizontal and vertical surfaces, making it practical in the field or at the bench. Accuracy is within plus or minus 1 percent of the Fahrenheit rating, giving technicians a reliable visual confirmation without the need for contact thermometers or pyrometers. Licensed tradespeople across HVAC, plumbing, and metal fabrication routinely use temperature-indicating liquids as a quick pass/fail check during heat-sensitive processes.

The TEMPIL 24428 is suited for use on metal and glass substrates in residential and commercial service environments. Typical applications include verifying preheat or post-heat temperatures on pipe and tubing assemblies, checking heat levels during brazing or soldering of refrigerant lines, and confirming temperatures on metal parts during fabrication or repair. The 2 oz container is sized for portability in a tool bag or service van. An enhanced formula reduces settling, so the liquid remains consistent throughout the container life.

Key Features

• Melts at exactly 1000 degrees F (538 degrees C), leaving a clear, visible mark on the surface
• Accuracy within plus or minus 1 percent of Fahrenheit and plus or minus 3 percent of Celsius
• Fast-drying formula works on both horizontal and vertical surfaces
• Enhanced formula reduces settling for consistent application throughout use
• Compatible with glass and metal substrates
• Compact 2 oz container suitable for field use

Compatibility

Designed for use on glass and metal surfaces where surface temperature verification is required during heating, brazing, soldering, or heat-treat processes.

Installation Notes

Apply the liquid to a clean, dry surface before or during the heating process. A licensed HVAC technician or pipefitter should follow applicable codes such as IFGC and ASHRAE guidelines when performing brazing or soldering on pressurized systems. Allow the surface to cool before handling coated areas. Keep the container sealed when not in use to prevent evaporation and maintain formula integrity.