break up the so-called working experience. I guess you are a microbiologist (or silimar background). You can break experience like this:
- I have 5+ years of experience on media and supplies preparation and sterilization
- 3+ years of experience on collection and process of environmental monitoring samples
- 10 years of experience in bioreactor, analytical instrument such as XXX, XXXX
- lots of experience in microbiological techniques, equipment, and familiar with cGMPs and GLPs...
etc. etc.----> you get the idea? Don't say you have no experience anymore.
Hope this helps.