what is ppm?

Answer 1

PPM stands parts per million
it is defined as number of parts of calcium carbonate present per 10^6 parts of water

Answer 2

Parts Per million:the most common "PPM" meaning .Parts per million ('ppm') denotes one particle of a given substance for every 999,999 other particles. This is roughly equivalent to one drop of ink in a 150 litre (40 gallon) drum of water, or one second per 280 hours. One part in 106—a precision of 0.0001%
PPM -"Portable Pixel Map"- lowest denominator color image file format.
PPM-Programer's Package Manager formerly known as Perl Package.

Answer 3

ppm refers to parts per million which literally means that how much part of a substance is present in million parts of another substance.it is mostly used when the concentration of a substance is low.it eg-the hardness of water is expressed in ppm level.

Answer 4

Pages Per Minute

Answer 5

ppm is parts per million

This is mostly used in analytical chemistry. There are two other ways to express this. In a water sample, it can also be expressed in mg/l. In a soil sample, it can also be expressed in mg/kg.

Answer 6

parts per million...its used to calculate the amount of dissolved substance in a liquid usually water... like if i say the carbon content is 1000 ppm....it means for every million particles of water there is 1000 particles of carbon...for every million molecules of water there is 1000 molecules of carbon and so on it goes...

Answer 7

Indeed it does stand for parts per million.

Think of it as a measure of things much smaller than a percentage could describe.

e.g 1% = 10,000ppm
0.1% = 1,000ppm, etc

Its really just a smaller scale measure for when percentage is just too big.

Does that make sense?

Answer 8

The PPM format is a lowest common denominator color image file format.

Answer 9

ppm is parts per million.ppb is parts per billion, ppt is parts per trillion

Answer 10

Parts per Million.

For solutions that are extremely dilute, we often express concentrations in parts per million.

1ppm = 1 mg/L