zs,
i agre to Lena and Andy .. u r using much less water to dilute 5 vials of desferal .. i have been on 5 desferals a day .. i used to take 25ml water to dilute 5 vials of desferal ... i have the almost same kind of pump ,, mine is MEids's Infusa-T , that is also support to only upto 10ml syringe ... but , the method i used to use 25ml water for 5 vials was to make 2 desferals in 10ml when that finish's then replace the empty sringe with 10ml filled syringe of desferal and when that get to finish then replace that empty syringe with a 5ml filled syringe .. make sure to not get the air in .. i posted the procedure how i used to replce syringes , in another thread somewhere , i willl try to find that and share that to you ASAP .....
Best Regards
Umair