Beetroot cylinders should be of the same area so that they have
same surface area and same amount ofpigment.Cylinders should be
left in the test tubes for equal time (ex 5 mins).Volume of water
in boiling tubes should be same.
Same or same species of beetroot used to make
cylinders.Beetroots should have been kept under same storage
conditions prior to the experiment.
Same par t of the beetroot (ex middle) should be used to make
the cylinders.
MethodAfter taking out the beetroot cylinder, shake the test
tube.
Select a complementary filter (blue, as pigment is red).Zero the
colorimeter reading against the control.
Plot the transmission readings against concentration or
temperature.
