Why Purity is Critical

The following image is an example of a fingerprinting gel with 12 samples:

Why Purity is Critical
17 Stevens beds surveyed
Average bed productivity was 31 – 396 bbls/acre

Lane 1 is the Stevens control fingerprint.

Lanes 2 – 6 represent five samples from a Stevens bed that is relatively pure.

Lanes 7 – 12 represent samples from a second bed exhibiting a high level of contamination.


Stevens Graph
Stevens yield decreases as contamination increases.

The blue line in this graph represents a two year average yield in each of the 17 beds. The red bars represent the number of off-types in each of the 17 beds. Beds with a greater number of “non-Stevens” bands generally were lower yielding.