Test tubes can be bought in special stores that sell educational or medical supplies. Some educational and teacher catalogs also sell them. Some universities also have student stores where you can buy test tubes and other lab equipment.
You can purchase test tubes online from scientific supply companies like Fisher Scientific or VWR International. They are also available at many local stores like craft stores, educational supply stores, and some pharmacies.
Glass test tubes can conveniently be purchased from a variety of online stores. There are the general stores, such as Amazon. Then there is eBay, for possibly the cheapest deals. Both used and new available there. Lastly, there are specialized science stores if you are looking for something particular in glass test tubes. Some of these specialized stores are Indigo, LCM Lab, Globe Scientific and Lab Depot Incorporated.
The cost of science test tubes can vary depending on the material, size, and quantity. On average, a pack of basic glass test tubes can range from $10 to $20. More specialized or larger test tubes made of materials like borosilicate glass or plastic may cost more.
Indigo Instruments offers a variety of science equipment, including test tubes, at its website, Indigo.com. Standard chemistry lab test tubes are 70 cents apiece.
burettes, flasks, chemicals
Science test tubes; generally made of pyrex to reduce breakage, are tubual containers often used in experiments. They can be heated, and cooled, and can you can use liquid or powder substances in them.
they are so you can see what amount of juice or something you have in it
Robot arms I think and test tubes
Test tubes are most often used in professional science and medical experiments to hold samples of substances. They are also frequently seen in school science classes and hospitals.
Test tube racks are commonplace in school science labs and are used routinely to securely hold test tubes or boiling tubes that are being observed or filled.
A common method for cleaning test tubes in science is to use a laboratory detergent or soap solution, along with a test tube brush to scrub the inside. Rinse the test tube thoroughly with water after cleaning. For more stubborn residues, soaking the test tubes in a solution of acid or base may be necessary, followed by thorough rinsing.
Test tube racks are used to support the test tubes but unlike the test tube holder, it can store the test tubes without anyone who will hold the rack... hope this helps!