noordinary
Member
- Joined
- Jun 1, 2016
- Messages
- 209
I think you misunderstood me:I agree they need to figure out the number and not just give a range.
ppm is parts per million and the range “<...” is actually how it usually is presented. I meant that the concentration of mercury up to 2 ppm is high. 2 ppm is “the number”. It’s just it is high. And i wonder is it like that because of the lack of eqipment for a more precise measurement (in case of mercury it is usually up to .00) or the concentration turned out to be 1.99 ppm and they made it look as < 2 ppm (which in that case is true non the less).