Fungus resistance tested in accordance with MIL-STD-810G with Change 1, Method 508.7

MIL-STD-810G ApprovedMaster Bond epoxy and silicone systems are non-nutrient and do not sustain or support mildew/mold/fungi or biological growth. This was recently tested using MIL-STD-810G with Change 1, Method 508.7 for fungus resistance. This is a stringent military standard that was developed by the U.S. Department of Defense. It is used to determine the extent to which a product will support fungal growth, how that growth can affect the performance of the material, and what specific species have grown.

Fungus growth is a function of temperature and humidity; it is most prevalent in warm and humid environments. In this test, the samples are inoculated with a spore suspension consisting of the following organisms:

  • Aspergillus flavus
  • Aspergillus versicolor
  • Penicillium funiculosum
  • Chaetomium globosum
  • Aspergillus brasiliensis (formerly known as A.niger)

The samples are then placed in a test chamber and held at 30 ± 2 °C with 90-100% relative humidity for a minimum of 28 days. Following this containment, the samples are then immediately inspected by trained professionals. Each sample is assigned a growth rating from 0-4, 0 meaning that the substrate is devoid of microbial growth and 4 meaning massive microbial growth.

The following products were tested by an independent lab and received a growth rating of 0:

MasterSil 151AO
EP46HT-2AO Black