In an ISO 13641 study by an independent testing laboratory, addition of BIOflexTM to a landfill not only did not inhibit, but actually increased the level of biological activity. This ISO test is designed to ensure that materials added to a landfill do not release toxic substances. BIOflex begins to degrade in the landfill within a few weeks and depending on thickness and quantity added, the PVC will vanish in 3 to 5 years. It should be noted that landfills can be managed by control of temperature and moisture content so as to increase the level of biological activity.
The Woods End ASTM D5526 data show that the ratio of the fraction of organic carbon and hydrogen from BIOflex released to the air, and the fraction delivered to the solid biomass varies with landfill conditions, such as temperature and water content. The fraction released to the air is mostly methane, which can be harvested for fuel, along with the methane released by other components of the landfill, such as paper. Variability in the ratio of end product to the air and to the biomass is also typical of ther land-filled materials, such as paper.
BIOflex has been tested for field performance including strength and weathering in the above tests as well as exposure to 2000 hours of laboratory UV, which BIOflex showed no signs of discoloration.