1. 
   Co-solvent
   A solvent having a very high solvency for a pesticide which is used in combination with a cheaper solvent processing lower solvency. The resultant effect is to increase the solvency of the lower priced solvent and enable the formulation to contain a higher content of active ingredient.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
2. 
   Continuum solvent
   self-made screenshot from the music video of No Doubt`s "Hey Baby" Source: http://www.mtv.com/overdrive/?artist=1003&vid=17502 © Interscope Records ===Fair use rationale for Hey Baby (No Doubt song)=== ...
   Found op http://en.wikipedia.org/wiki/Continuum_solvent
   
   

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