Table 3.

Analytical results of the amount of Y, Zr, Nb, Mo, Ru, Cd, Sn, Sb, Ba and La in irreversible hydrocolloid.

Analytical Results
Contract Items	Irreversible Hydrocolloid 1	Irreversible Hydrocolloid 2	Irreversible Hydrocolloid 3	Irreversible Hydrocolloid 4	Irreversible Hydrocolloid 5	Irreversible Hydrocolloid 6	Irreversible Hydrocolloid 7	Irreversible Hydrocolloid 8
Y	Undefined	2 ppb	Undefined	Undefined	1 ppb	Undefined	Undefined	0.044 ppb
Zr	4 ppb	23 ppb	4 ppb	4 ppb	24 ppb	4 ppb	4 ppb	Undefined
Nb	8 ppb	30 ppb	8 ppb	8 ppb	420 ppb	7 ppb	7 ppb	Undefined
Mo	3 ppb	26 ppb	2 ppb	3 ppb	44 ppb	2 ppb	2 ppb	Undefined
Ru	<0.004 ppb	<0.004 ppb	<0.004 ppb	<0.004 ppb	<0.004 ppb	<0.004 ppb	<0.004 ppb	<0.004 ppb
Cd	<0.009 ppb	<0.009 ppb	<0.009 ppb	<0.009 ppb	1 ppb	<0.009 ppb	<0.009 ppb	<0.009 ppb
Sn	76 ppb	30 ppb	73 ppb	73 ppb	43 ppb	71 ppb	72 ppb	2 ppb
Sb	1 ppb	2 ppb	1 ppb	1 ppb	5 ppb	1 ppb	1 ppb	Undefined
Ba	4 ppb	162 ppb	4 ppb	4 ppb	51 ppb	4 ppb	4 ppb	Undefined
La	Undefined	3 ppb	Undefined	Undefined	3 ppb	Undefined	Undefined	Undefined
Analytical methods used in Determinations
ICP-MS: ICP-MS => 049, 050, 051, 052, 053, 054, 055, 056, 057, 058