3B Scientific Capillary Tubes Apparatus - Manual

3B SCIENTIFIC® PHYSICS
3B Scientific GmbH ▪ Rudorffweg 8 ▪ 21031 Hamburg ▪ Germany ▪ www.3bscientific.com
Subject to technical amendments
© Copyright 2012 3B Scientific GmbH
Apparatus for Investigation of Capillary Effects 1003510
Instruction sheet
06/12 ALF
1 Base
2 Capillary
tubes
3 Filling tube, water reservoir
1. Safety instructions
The apparatus for investigation of capillary ef-
fects is made of glass. There is a risk of break-
age and therefore of injury!
• Handle the glass vessel carefully
• Avoid an exertion of mechanical loads on
the apparatus.
• Be careful when using coloured water not to
let it splash on your clothes, for example.
2. Description
The apparatus for investigating capillary effects
is for demonstrating capillary effects using thin
glass tubes.
It consists of four capillary tubes of differing
diameters connected together via a horizontal
glass tube to a water reservoir.
The smaller the diameter of the capillary tube,
the higher the water climbs above the level of
the reservoir due to the greater hydrostatic
pressure.
3. Technical data
Internal diameters of
the capillary tubes:
2.0; 1.5; 1.0 and 0.5 mm
Height: 165 mm approx.
4. Operation
It is practical to use coloured distilled water during
the experiments. Recommended colouring dye:
Indigo Solution
1000793
When filling the water reservoir, it is not totally
irrelevant how the task is performed. If the water
is simply poured in, it is possible for air bubbles
to be trapped in the capillary tubes, making it
impossible to demonstrate the capillary effect as
desired. It is not easy to remove such air bub-
bles.
• To fill the apparatus, hold it at an angle with
the smallest-diameter tube nearest the top
• Carefully fill it with water
• Place the apparatus on a level surface and
observe the capillary effect.