"Ordinary window glass passes about 90% of the light above 350 nm, but blocks over 90% of the light below 300 nm"(Wikipedia)
So for resins that work above 350, you can't see the diference betweeen normal glass vat or borosillicate.
1mm Borosilicate Glass:
![Image](http://www.sinclairmfg.com/images/curve_bo.jpg)
Normal Glass:
![Image](http://www.sinclairmfg.com/images/curve_sl.jpg)