![So, How Did The CDC Come Up With MCHM Being 'Safe' Under 1 PPM, Anyway? - West Virginia Public Broadcasting : West Virginia Public Broadcasting So, How Did The CDC Come Up With MCHM Being 'Safe' Under 1 PPM, Anyway? - West Virginia Public Broadcasting : West Virginia Public Broadcasting](https://npr.brightspotcdn.com/dims4/default/3b5bd78/2147483647/strip/true/crop/550x1503+0+0/resize/1760x4810!/quality/90/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2Flegacy%2Fsites%2Fwvpn%2Ffiles%2F201401%2FHow_did_the_Center_for_Disea-2.png)
So, How Did The CDC Come Up With MCHM Being 'Safe' Under 1 PPM, Anyway? - West Virginia Public Broadcasting : West Virginia Public Broadcasting
![SOLVED: The following common units expressing parts per million (ppm) in weight per weight (w/w) or mass per mass (m/m) are the following EXCEPT: Group of answer choices ng/mg mg/kg μg/g none SOLVED: The following common units expressing parts per million (ppm) in weight per weight (w/w) or mass per mass (m/m) are the following EXCEPT: Group of answer choices ng/mg mg/kg μg/g none](https://cdn.numerade.com/ask_previews/8d823e03-c458-46fc-89ea-bf734a8b1ec1_large.jpg)
SOLVED: The following common units expressing parts per million (ppm) in weight per weight (w/w) or mass per mass (m/m) are the following EXCEPT: Group of answer choices ng/mg mg/kg μg/g none
![SOLVED: 1 mg/kg is the same as ppm or parts per million. How many ppm of Cl- is in the water supply? SOLVED: 1 mg/kg is the same as ppm or parts per million. How many ppm of Cl- is in the water supply?](https://cdn.numerade.com/project-universal/previews/29c618cb-eaa0-461d-9072-1654a6a3cc02.gif)
SOLVED: 1 mg/kg is the same as ppm or parts per million. How many ppm of Cl- is in the water supply?
![SOLVED: 1 mg/kg is the same as ppm or parts per million. How many ppm of Cl- is in the water supply? SOLVED: 1 mg/kg is the same as ppm or parts per million. How many ppm of Cl- is in the water supply?](https://cdn.numerade.com/ask_previews/01368b34-9ebf-4a19-9061-f0258568b2cb_large.jpg)