What are micro test tubes used for?
Standard polypropylene micro test tubes are recommended for solvent extraction and heating, when a very tight cap seal is required. Because of their tighter cap fit, standard tubes may be more difficult to manipulate in applications that require repeated opening and closing of the tubes.
What glass is used for test tubes?
Borosilicate glass test
They are easier to see through than plastic tubes. Borosilicate glass test tubes can withstand thermal shock and chemical shock which makes them a common test tubes material for chemistry applications.
What are the little glass tubes called?
Pipettes. Pipettes are used to deliver small volumes of liquids reliably and repeatedly. There are different types of pipettes.
What are the types of test tubes?
There are several types of test tube materials: glass, plastic, metal, and ceramic. Glass and plastic are the most common, some are designed to be reused, while others are disposable.
What is the difference between test tube and boiling tube?
The difference between them is their diameter. A boiling tube is wider than a test tube. This makes it better suited for boiling liquids in, as they are less likely to bump. However, this dangerous behaviour still does occur, so care needs to be taken when boiling a liquid.
Can you centrifuge glass test tubes?
Caution: Do not centrifuge glass tubes at forces above 2200 RCF in a horizontal head (swinging bucket) centrifuge as breakage may occur. Glass tubes may break if centrifuged above 1300 RCF in fixed angle centrifuge heads. BD Vacutainer® Plus Tubes will withstand up to 10,000 RCF in a balanced centrifuge.
What are the different test tubes called?
Material Types. There are several material types of test tubes: glass, plastic, metal and ceramic.
Why are test tubes made of glass?
Test tubes, intended for general chemical work are usually made of glass, for better resistance to heat and corrosive chemicals and longer life. Tubes made from expansion-resistant glasses, mostly borosilicate glass (or fused quartz) can withstand high temperatures, up to several hundred degrees Celsius.
What is the difference between a test tube and a boiling tube?
What tests are EDTA tubes used for?
EDTA acts as an anticoagulant, binding the calcium ions and interrupting the clotting of the blood sample. EDTA is used for most hematology procedures, assessing complete blood count, preparing EDTA plasma, whole blood collection and bone marrow specimens. SBC has its own infectious disease testing lab in-house.
How are glass tubes measured?
The maximum distance between two planes perpendicular to the tubing axis, touching both tube ends. The Straightness is defined as longitudinal curvature of the tubing, and is measured at the maximum deviation from a straight line over 1000 mm length of the tube.
Why is test tube glass thin?
The mercury inside is metal and an excellent heat conductor, but the glass is an insulator. So, for heat transfer improvement, the glass is made as thin as possible to speed up the copying of the temperature from the hot liquid to the mercury/spirit liquid inside the thermometer.
What is the size of the large glass test tubes?
The large glass test tubes are 150 mm tall x 16 mm with 14 mm inside diameter. Approximate volume is 22 ml. Use with No. 0 stopper. This size is the best for general use.
What is the size of a borosilicate glass test tube?
The small 13x100mm borosilicate glass test tubes are 100 mm tall x 13 mm with 11 mm inside diameter. Volume is approximately 9 ml. Use with No. 00 rubber stoppers or No. 2 cork stoppers. The large 16x150mm borosilicate glass test tubes are 150 mm tall x 16 mm with 14 mm inside diameter.
What is the difference between large and extra-large test tubes?
The large test tubes are 150 mm tall x 16 mm with 14 mm inside diameter. Approximate volume is 22 ml. Use with No. 0 stopper. This size is the best for general use. (Pack of two.) The extra-large test tubes are 150 mm tall x 20 mm with 17 mm inside diameter and approximately 28 ml volume. Use a No. 1 stopper.
What is the smallest size of a test tube?
Small Test Tubes 1 13x100mm (1/2×4″) are our smallest tubes 2 18x150mm (3/4 x 6″), the standard chemistry lab test tube 3 stoppers & test tube racks available separately