What is the ASTM G21 test and how does it work?

ASTM G21 is an industry standard that uses an intensive testing protocol for determining if fungi, including mold and mildew, can grow on a polymeric material. MAPEI uses a third-party lab and the ASTM G21 standard for testing the antifungal effectiveness of MAPEI products containing polymer that incorporate BioBlock technology. The ASTM G21 test uses a mix of mold and mildew spores commonly found in household environments. Product samples are placed on nutrient-containing plates and sprayed with a mixture of these fungi. For 28 days, the test plates are kept at a constant temperature of 84.2°F (29°C) and exposed to high humidity, which are excellent conditions for fungal growth. The samples are then examined for fungal growth. If no growth is present, the product is considered to not support mold/mildew/fungal growth.

Products

Ultrabond ECO 185
Ultrabond ECO 185
Ultrabond ECO 185 is a latex-based adhesive that offers fast grab and quick leg…
Ultrabond ECO 220
Ultrabond ECO 220
Ultrabond ECO 220 is a high-solids, latex-based adhesive designed specifically…
Ultrabond ECO 350
Ultrabond ECO 350
Professional, Solid Vinyl Flooring Adhesive Ultrabond ECO 350 is a proprietary…
Ultrabond ECO 360
Ultrabond ECO 360
Ultrabond ECO 360 is a proprietary, high-performance, wet-lay and…
Ultrabond ECO 420
Ultrabond ECO 420
High-Performance, Moisture-Resistant, Indoor/Outdoor Carpet Adhesive Ultrabond…
Ultrabond ECO 575 [NA]
Ultrabond ECO 575 [NA]
Ultrabond ECO 575 [NA] is a premium wall-base adhesive specifically designed to…
Ultrabond ECO 711
Ultrabond ECO 711
Ultrabond ECO 711 is a latex-based adhesive that offers a quick drying time…
Ultrabond ECO 811
Ultrabond ECO 811
Ultrabond ECO 811 is a high-performance, acrylic latex adhesive designed to…
Ultrabond ECO 3185
Ultrabond ECO 3185
Premium, Latex Carpet Pad Cement Ultrabond ECO 3185 latex carpet pad adhesive…
Keracolor U
Keracolor U
Keracolor U is a premium-grade, preblended, polymer-modified unsanded…
Keracolor S
Keracolor S
Keracolor S is a premium-grade, pre-blended, polymer-modified sanded…
MAPEI Flexcolor 3D
MAPEI Flexcolor 3D
MAPEI Flexcolor 3D is a professional-grade, ready-to-use (RTU) translucent…
Ultracolor Plus FA
Ultracolor Plus FA
Rapid-Setting, “All-in-One” Grout Replacement for Sanded and Unsanded Grouts …
Keracaulk S
Keracaulk S
Keracaulk S is a premium-grade, easy-to-use, easy-to-clean, siliconized, sanded…
Keracaulk U
Keracaulk U
Keracaulk U is a premium-grade, easy-to-use, easy-to-clean, siliconized,…
UltraCare Grout Refresh
UltraCare Grout Refresh
Universal Grout Colorant and Sealer UltraCare Grout Refresh is a nonflammable,…
Mapelastic HPG
Mapelastic HPG
Mapelastic HPG is a ready-to-use, highly flexible, liquid acrylic waterproofing…

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