1.   Haemolysis was determined by measuring the Fe content of the supernatant using an atomic absorption spectrophotometer.

2.   A movement, or acceleration, of the chip can then be determined by measuring the electrical signals generated by the displacement of the suspended structure.

3.   This is determined by measuring the distane, or spread, between the holes in the lavatory or sink shelf.

4.   This is determined by measuring the distance, or spread, between the holes in the lavatory or sink shelf.