This Constant Volume Thermometer (CVT) is a high quality instrument for performing the standard experiments relating to gas temperature and gas pressure. The unit requires approx. 150gm of distilled mercury (not supplied in the kit). By removing several components and fitting others, the instrument can be converted to be the IEC Boyle’s Law Apparatus.

The CVT is a method of proving Charles' Law. In some ways it is similar to the classic Boyle's Law apparatus. A volume of air is heated to a known temperature and the mercury column is adjusted so that the volume of the air remains constant. In this way, the relationship between pressure and temperature of the air is established. In the theoretical Charles' Law, the volume is permitted to change at a constant pressure, but this method of developing the relationship by keeping the volume constant is easier to perform accurately.

The following items are included in the CVT:
• 1 pce Long aluminium rail complete with 1m scale and end cap. The scale has a transparent cover to permit marking and wiping clean by students.
• 1 pce Steel base.
• 1 pkt 2x Bolts, washers & nuts for sliders. 4 x Screws to mount rail to base.
• 2 pcs Aluminium sliders complete with clips for glass.
• 1 pce Glass tube with open end.
• 1 pce Glass tube with reference mark and bent leg.
• 1 pce Thin walled glass bulb approx. 50mm diameter (‘Jolly bulb’).
• 1 pce Rubber joining piece.
• 1 pce ‘L’ shaped wire support leg for glass tubes.
• 1 pce Rubber loop to hold glass tube to the ‘L’ shaped support.
• 1 pce Wire frame for supporting a beaker.
• 1 pce Glass beaker, 400ml.
• 1 pce Rubber hose (for mercury) to join glass tubes, 1m long x 3mm bore.

Product Size: 250x140x1140mm LxWxH.
Weight: 1.8 kg.
Instruction Sheet included. Genuine IEC product.