$99.74

Copper Standard, 1.0 ppm Cu in 12.5% (v/v) Ethanol - R2279100-500A

$50.87

Copper Standard, 200 ppm Cu - 2295-16

$91.79

Copper Standard, 10,000 ppm Cu - 2305-4

$51.22

Copper Standard, 20 ppm Cu - 2290-16

$210.58

Copper Standard, 10,000 ppm Cu - 2305-16

$252.90

Copper Standard, 5 ppm Cu in H?O - R2285300-4A

$39.62

Copper AA Standard, 50 ppm Cu in 5% HCl - R2293200-500N