How to calculate ppm？？？ (1 Viewer)

[syxxjixian]

What is ppm???still don't know how to calculate it ! only thing i know is mg/L, and it is a ratio....

 

[gunat61]

yes ppm is mg/L .. but what's the question?
whatever it is, you must change it into this form..

 

[b3kh1t]

Depends on the question type, since ppm equals to mg/L, you can then use concentration to find anything you need.

Note that 1000 mg = 1 g
so 1 mg = 1x10^-3 g

 

[mathemalia]

Very easy my friend.
Say you have 50 gram or 50mL (both work) and the mass of phosphates in the solution is 0.05 grams (both have to be expressed as grams or mL ,not one milligrams and the other grams etc), so the ratio becomes:

Phosphate : Water
0.05 : 50

So you say okay, what if you i had million parts of water, how much phosphate will I have:

Phosphate : Water
0.05 : 50
x : 10^6

simple cross multiplication, gives you the value of x =( 0.05 * 10^6 )/50 = 1000 ppm.