Compostable (transformable into compost, a natural fertilizer) is defined as a material that is not only biodegradable, but also disintegrating and whose decomposition process takes place in less than 3 months. The term "compostable" therefore refers to regulations related to the non-toxicity of the decomposed material if dispersed in nature.
Since Leopet has made its mission the attention to safety and respect for the environment, these compostable sanitary bags comply with the EN 13432 EU standard of 2002, a standard of the European Standardization Committee relating to the characteristics that a material must possess to be able to define biodegradable or compostable.
-According to the EN 13432 standard, a material to be defined as "compostable" must have the following characteristics:
- degrade at least 90% in 6 months if subjected to an environment rich in carbon dioxide; these values must be tested with the standard method EN14046 (also called ISO14855);
- in contact with organic materials for a period of 3 months, the mass of the material must consist of at least 90% of fragments smaller than 2 mm; these values must be tested with the standard method EN14045;
- the material must not have negative effects on the composting process;
- low concentration of heavy metals added to the material;
- pH values within the established limits;
- saline content within the established limits;
- concentration of volatile solids within the established limits;
- concentration of nitrogen, phosphorus, magnesium and potassium within the established limits.