Laboratory test tube brushes: small sized brushes on the left, large sized brushes on the right.
A test tube brush or spout brush is a brush used for cleaning test tubes and narrow mouth laboratory glassware,[1] such as graduated cylinders, burettes, and Erlenmeyer flasks. It is composed of nylon, synthetic, or animal fur bristles of various diameters lined against a rather sturdy wire handle with a looped end for hanging. The wire can be made from a wide range of metals, such as aluminium, bronze, beryllium, copper, and brass.[2] FDA grade brushes are designed to be resistant to acid and other corrosive chemicals, including aromatic and aliphatic hydrocarbons, ketones, ethyl acetate esters, and trichloroethylene.
^"Fan Tip Tube Brushes". Thomas Scientific. Thomas Scientific. Retrieved 4 February 2016.
A testtube, 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...
Testtube racks are laboratory equipment used to hold upright multiple testtubes at the same time. They are most commonly used when various different...
substance. The apparatus resembles a glass testtube with an attached handle. Oil is poured into the tube, and then the "handle" is heated, either by...
This process is also used to pour a large-mouthed flask or beaker into a testtube. Glass rods can also be used to induce crystallization in a recrystallization...
slots in the side of the tube bottom to admit air into the stream using the Venturi effect, and the gas burns at the top of the tube once ignited by a flame...
ordinary testtubes were used. As innovation motivated changes in technique, cuvettes were constructed to have focal points over ordinary testtubes.[clarification...
flasks, testtubes. General specifications. ASTM C188 - 09 Standard Test Method for Density of Hydraulic Cement. Hughes, J. C. (Apr 1959), Testing of Glass...
graduated glass tube with a tap at one end, for delivering known volumes of a liquid, especially in titrations. It is a long, graduated glass tube, with a stopcock...
thistle tube is a piece of laboratory glassware consisting of a shaft of tube, with a reservoir and funnel-like section at the top. Thistle tubes are typically...
are spectral bandwidth (the range of colors it can transmit through the test sample), the percentage of sample transmission, the logarithmic range of...
A funnel is a tube or pipe that is wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening. Funnels are usually...
applications like blood collection tubes) Multipurpose high-speed centrifuges (devices for a broad range of tube sizes, high variability, big footprint)...
called flip-tops or snap caps. The bottom of a vial is often flat, unlike testtubes, which have usually a rounded bottom, but this is often not the case for...
Funnel support Iron ring Pinch clamp Retort stand Screw clamp Testtube holder Testtube rack Wire gauze Lab drying rack Containers Storage Agar plate...
connected to a tube, partially filled with water. As the air in the bulb warms or cools, the height of the column of water in the tube falls or rises...
runs the rubber piece oscillates rapidly in a circular motion. When a testtube or other appropriate container is pressed into the rubber cup (or touched...
in electrical potential relates to the acidity or pH of the solution. Testing of pH via pH meters (pH-metry) is used in many applications ranging from...
Funnel support Iron ring Pinch clamp Retort stand Screw clamp Testtube holder Testtube rack Wire gauze Lab drying rack Containers Storage Agar plate...
between laboratory equipment. Example laboratory sample tubes are listed below: Ignition tubeTesttube Boiling tube NMR tube Laboratory glassware v t e...
the conditions of experiments. Jöns Jacob Berzelius, who invented the testtube, and Michael Faraday both contributed to the rise of chemical glassblowing...
Glass tubes are mainly cylindrical hollow-wares. Their special shape combined with the huge variety of glass types (like borosilicate, flint, aluminosilicate...
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