Blood is a fluid connective tissue that performs many functions in the body. It carries oxygen and nutrients to the cells, hormones (chemical messengers) to the tissues, and waste products to organs that remove them from the body.
A wash bottle is a squeeze bottle with a nozzle, used to rinse various pieces of laboratory glassware, such as test tubes and round bottom flasks. Wash bottles using in laboratories. Wash bottles are sealed with a screw-top lid.
Stainless steel water bottles are easier to clean than plastic reusable bottles because plastic can crack, get scratched and harbor bacteria in those nicks. Stainless steel is a much stronger material and is naturally anti-bacterial.