For diesel fuel, the limit for benzene was set at 350 ppm.
2
This brings the threshold of 450ppm closer sooner than had been anticipated.
3
In contrast, 250 ppm Pb-treated males did not differ in these endpoints.
4
The US Food and Drug Administration limits vomitoxin in food to 1 ppm.
5
Many locations rejected wheat with levels of 10 ppm and higher.
Uso de portable people meter en inglés
1
Arbitron makes the device called the PortablePeopleMeter (PPM) to measure radio station listenership.
2
The suit accused the company of failing to disclose flaws in its PortablePeopleMeter system, used to compile radio station audience size estimates.
3
Arbitron is a media ratings service company that makes the device called the PortablePeopleMeter (PPM) to measure radio station listenership.
4
The suit accused the company of failing to disclose flaws in its PortablePeopleMeter (PPM) system, used to compile radio station audience size estimates.
5
Revenue for the company, which makes the device called PortablePeopleMeter to measure radio station listenership, fell 4 percent to $98 million.