Test Tubes & Boiling Tubes. (Glass only)
A variety of heat resistant borosilicate Test Tubes and Boiling Tubes.
Available with or without rimmed edge.
Technicians will often request rimless test tubes. These have proven less inclined to break when bundled and dishwasher cleaned.
The inner & outer diameter size is listed for easy rubber stopper ordering.
Sold singly or in listed pack size.
* Bomex lab-glass tubes undergo an additional hardening process.
** Schott test tubes are recommended if solids are subjected to extreme heat..
*** For ‘U’ Shaped Test Tube (with or without sidearm) known as ABSORPTION TUBE, click here.
**** Click here for Test/Boiling Tube HOLDERS, RACKS, or BRUSHES.
[Wikipedia excerpt: ‘…..A test tube, also known as a culture tube or sample tube, is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing, open at the top and closed at the bottom. Test tubes are usually placed in special-purpose racks……Boiling tube. A boiling tube is a small cylindrical vessel used to strongly heat substances in the flame of a Bunsen burner. A boiling tube is essentially a scaled-up test tube, being about 50% larger….They are designed to be wide enough to allow substances to boil violently as opposed to a test tube, which is too narrow; a boiling liquid can explode out of the end of test tubes when they are heated, as there is no room for bubbles of gas to escape independently of the surrounding liquid. This phenomenon is called bumping….Being large and thick-walled, It is primarily used to hold small quantities of substances which are undergoing direct heating by a Bunsen burner or other heat source……’]