Greenland Biodegradable 4 Toilet Brush Replacement Heads Compatible with OXO 1043632 Good Grips Toilet Brush Replacement Head and The OXO 1281600 Good Grips Toilet Brush. Pack of 4.

?COMPATIBILITY: Replaces the OXO 1043632 Good Grips Toilet Brush Replacement Head and Compatible with the OXO 1281600 Good Grips Toilet Brush. ?BIODEGRADABLE: Oxo-biodegradable. ? ASTM D6954-04: Complies with ASTM D6954-04. ?STRONG & DURABLE: Same strength and durability as regular plastic. ?PLANET-FRIENDLY: A far better choice for the environment! . What does oxo-biodegradable mean? Oxo-biodegradable simply means that the plastic, at the end of its useful life, biodegrades through oxidation in the presence of oxygen, when exposed to heat or sunlight, hence the name oxo-biodegradable (oxo stemming from oxygen). Oxo-biodegradable plastic is made by blending a pro-degradant additive (such as EPI or D2W) into the plastic during the manufacturing process. The additive causes the molecular structure of plastic to break down when exposed to heat or sunlight with oxygen present. What is oxidation? Oxidation is a process in which a chemical substance changes because of the addition of oxygen. Why is oxo-biodegradable plastic not compostable? Products may only be classified as compostable if they biodegrade within 180 days (6 months) in a composting system, back into biomass, carbon dioxide and water. Any product which takes longer than 180 days to break down is not allowed to be classified as compostable. Disclaimer OXO is a registered trademark of Helen of Troy Limited. This product is not manufactured or made under the authorization of Helen of Troy Limited. Any use of the OXO brand name or model designation for these products is made solely for purposes of demonstrating compatibility.