The document describes experiments testing the bacterial inhibiting and color fastness properties of chitosan and cotton. It involves growing two types of bacteria (Staphylococcus aureus and Escherichia coli) on plates containing samples and monitoring growth over 24 and 48 hours. It also involves dyeing cotton and cotton chitosan samples and testing their color fastness after washing. The results show that bacteria grew less densely on plates containing chitosan samples compared to cotton samples, indicating chitosan can decrease bacterial growth. It also shows the cotton chitosan had better color fastness than plain cotton.