The major components of
foreign matter were alkyl ether sulfate for detergent,
pyrethroid for insecticides, sodium hypochlorite for bleach,
polyvinylidene chloride for PVDC, polyethylene terephthalate for PET, polypropylene for PP and polyethylene
for PE. About 0.28 g of model food garbage with a water
solution and a fraction of foreign matter, such as detergent
0.167 g; insecticide, bleach and PVC 0.033 g; PET and
PP 0.083 g and PE 0.067 g, were applied.