UL 94 is a flammability test standard for plastic materials used in parts and appliances. The standard covers different test methods, including the Horizontal-Vertical Flame Chamber test.

The industry standards related to UL94 Horizontal-Vertical Flame Chamber testing include:

1. ASTM D635 - Standard Test Method for Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position

2. IEC 60695-11-10 - Fire Hazard Testing - Part 11-10: Test Flames - 50 W Horizontal and Vertical Flame Test Methods

3. ISO 1210 - Plastics - Determination of Burning Behaviour by Oxygen Index

4. DIN EN 60695-11-10 - Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test methods

These standards provide guidance on how to perform the test, what equipment and instrumentation to use, and how to interpret the results. They also outline the criteria for classifying materials based on their performance during the test.