Dr. Declan Bedford:

However, the breathalysers and all the equipment are regularly checked. Also, we regularly check to see whether there is something better. We have to keep replacing equipment all the time. There is a programme for doing that. As I stated, we are out to tender at present for some of our machinery. A number of tenders have come in. They have to go through a process of rigorous testing to ensure they do what they say on the tin.