AATCC test method 88B and others calling for Ballast Load developed in 1962 was based on ballast load solely provided by Testfabrics, Inc. Recently updated ISO Ballast Type I & II is derived from same or similar fabrics.
During 50 years of continuous supply, there have been continuous product improvements based on decades of customer feedback worldwide resulted in making it "the first choice" of leading labs around the globe.
If you need something different, we can manufacture Ballast (Makeweights) Loads in different or mixed materials from our large inventory of Standard Fabrics according to your specified weights or dimensions.