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SURFACE TENSION WITH THE RING METHOD (DU NOUY METHOD) - PHYWE - P2140500

Artikelcode: PP2140500

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The force is measured on a ring shortly before a liquid film tears using a torsion meter. The surface tension is calculated from the diameter of the ring and the tear-off force.

Tasks
1.Determine the surface tension of olive oil as a function of temperature.
2. Determine the surface tension of water/methanol mixtures as functions of the mixture ratio.

What you can learn about
Surface energy
Interface
Surface tension
Adhesion
Critical point
Eötvös equation

35750-95 Magnetic stirrer with heater MRHei-Tec 1x
02416-00 Torsion dynamometer, 0.01 N 1x
17547-00 Surface tension measuring ring 1x
37692-00 Retort stand, 210mm × 130mm, 500mm 1x
30008-50 Ethyl alcohol, absolute 500 ml 1x
02728-00 Water jet pump, plastic 1x
02040-55 Right angle clamp PHYWE 1x
36589-00 Pipette dish 1x
02022-20 Supp.rod stainl.st.,50cm,M10-thr. 1x
36592-00 Pipettor 1x
37715-00 Universal clamp 2x
36705-00 Stopcock,1-way,straight, glass 1x
31246-81 Water, distilled 5 l 1x
46245-00 Crystallizing dish, boro3.3, 900ml 2x
30177-10 Olive oil,pure 100 ml 5x
46244-00 Cristallizing dish,boro3.3, 500ml 2x
37697-00 Right angle clamp 2x
36701-64 Glass tubes,straight, 150 mm, 10 1x
36579-00 Volumetric pipette, 20 ml 1x
36629-00 Graduated cylinder 100 ml 1x
02412-00 Silk thread, l = 200 m 1x
36578-00 Volumetric pipette, 10 ml 1x
39296-00 Silicone tubing i.d. 7mm 2x
46299-02 Magnetic stirring bar 30 mm, cylindrical 1x