The measurement of dynamic and static froth stability has found widespread application in the characterisation of froth performance. However, little attention has been given to scale parameters in the performance of these measurements. This study focussed on the effect of pulp bubble size on froth stability. Different pulp bubble sizes were generated in a non-overflowing column and time-dependent froth characteristics such as froth height, side of-froth and top-of-froth bubble size were measured. An inverse relationship was found between apparent, measured froth stability and pulp bubble size. It was also shown that top-of-froth bubble size is independent of pulp bubble size. A normalised froth height parameter is used to generate a bubble growth curve which is independent of pulp bubble size. It is proposed that this type of analysis may present an avenue into a truly scale independent analysis of froth stability.