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.
The refillers say that washing and reusing water bottles is safe, particularly if they are washed regularly with hot, soapy water. Many advocate for an occasional swish with a diluted bleach solution to kill any stubborn bacteria and eliminate that old water smell that sometimes develops.