Several areas reported over 1,000 ppm Li. Chip samples in the area are 2.47% Li2O at Mapetre and 4.16% Li2O at Central. Magnitude of lithium anomaly cannot be accounted for by the known pegmatites ...

Only 2 individual trials reported significant differences between pastes, but when meta-analysed, 1000 ppm monofluorophosphate dentifrices gave a weighted mean DFS 0.6 less than 250 ppm (P = 0.002 ...

For instance, my Jeep has about 200,000 miles and a catalytic converter, so I use 1,000 ppm in my older straight-six. My Volkswagen, however, ...

And if CO2 levels in a gym drop from 2,800 ppm to 1,000, the risk of COVID-19 transmission drops 75%. There are of course caveats to his models, particularly when it comes to masks, airplanes and ...