CaCO₃/Yb

With/without a lid

Yb

YbO

Yb₂O₃

2

With a lid

ND

w

v s

1

ND

w

v s

0.75

ND

s

v s

0.5

ND

v s

w

0.4

ND

v s

v w

0.3

ND

v s

v s

0.4

Without a lid

ND

v s

s