What are the different version numbers?
To make sure changes in a probemix are noticed by its users, MRC-Holland uses version numbers. A new probemix always has version number A1. Letters denote major versions, whereas numbers are used for subversions. To denote minor changes such as the addition of the D-control fragments to the probemix, the number after the letter changes, for instance from A1 to A2. To specify major changes in the probemix, like the addition of a new probe, we change the letter, for example from A3 to B1. One version can have various lots if in the meantime nothing has changed content of the probemix. All changes made to a probemix are indicated in the probemix description.
