| PRIMARY STANDARDS |
5% - 50%
500 ppm to < 5%
1 ppm to < 500 ppm |
±1% of each minor component
±2% of each minor component
±of each minor component |
±1% of each minor component
or
down to ±0.02 absolute |
|
ZERO PREPARATION TOLERANCES |
10%-50%
0.1%-9.9%
100 ppm - 999 ppm |
±0% of each minor component
±0% of each minor component
±of each minor component |
±2% of each minor component
±3% of each minor component
±3% of each minor component |
| CERTIFIED STANDARDS |
10%-50%
0.1%-9.9%
5 ppm - 999 ppm |
±4% of each minor component
±5% of each minor component
±10% of each minor component |
±2% of each minor component
±3% of each minor component
±3% of each minor component |
