170135_inorganicventures_flipping

High Temperature Leaching

Element LDPE 20C

LDPE 50C Stationary

LDPE 50C Tumbling

LDPE Chemical Dishwasher 1X

LDPE Chemical Dishwasher 2X

Unleached

Al Cr

2.00 0.03 0.08 1.90

2.20 0.02 0.06 1.50

0.53 0.02 0.06

5

14 30

10

Mn

1 4 1 1

2 8 2

Ni Ag Zn

3.00 2 Values are the ng of impurity per 30mL bottle. The HNO 3 used contains some Al, Cr, and Zn. 2.70

Leaching Observations • Un-leached bottles do contain some metallic impurities • After high temperature leaching, impurities are significantly reduced. • Allowing hot solution to mix within the bottles significantly reduced the amount of impurity left behind • Chemical dishwashers deposited significant amounts of metallic impurities onto the bottle walls. • We believe that the dishwasher contained stainless steel parts.