2 questions

hishine1hishine1 Member
edited October 2014 in Formulating
Hi there!
Couple of questions... I'm learning the Refractive matching process to create crystal clear products, is there any other way other than using a Refractometer to guage the RI of water & oil phases? (eg; a mathematical equation like the HLB Calc) or am I just looking at trial and error and adjusting amounts of ingredients.  
It's for W/Si microemulsions btw.

Can anyone point me towards a supplier for  Ethylene/Propylene/Styrene & Butylene/Ethylene/Styrene Copolymer? 

Thanks :-)
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