manual switchover panel w/ solenoid     ASY-540-Penn    Penn Fluid (Swagelok)   2150     2      4300   
manual switchover panel w/o solenoid    ASY-540-Penn    Penn Fluid (Swagelok)   2050     4      8200   
Auto switchover panel for Ar    ASY-542-Penn    Penn Fluid (Swagelok)           2400     2      4800   
explosion proof fan, 6" diameter MSFX061-115     Marc Climatic Controls, Inc     468     2       936    
Coalescing filter       HN1S-4QUY       www.generalairproducts.com               236.5   2       473
Leak detector     Restek                                                         900     2      1800

Total of above                                                                                 20509

Refurbish the prototype gas mixing panel w/ 2 new mass flow controllers         1500     2      3000

OR, buy 3rd mixing panel from Penn Fluid (Swagelok) to match the 1st 2                         22000


Total if refurbish                                                                             23509

Total if buy new 3rd panel                                                                     42509