Transfer bacterial cultures without risk of contamination with disposable loops. Use loop end to uniformly streak gel surface; use needle for removal of colonies. Choose PP loops for more flexible handle use and ABS loops for more rigid handle use. The loops are supplied sterile for immediate use. Transfer bacterial cultures without risk of contamination with disposable loops. Use loop end to uniformly streak gel surface; use needle for removal of colonies. Choose PP loops for more flexible handle use and ABS loops for more rigid handle use. The loops are supplied sterile for immediate use.