PPM Scale.

Kisskorv

Active Member

Dec 13, 2020

• #1

When you are talking abut ppm; Are talking abut the 500 scale or 700?

 

Lordhooha

Well-Known Member

Dec 13, 2020

• #2

Kisskorv said:

When you are talking abut ppm; Are talking abut the 500 scale or 700?

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Depends on the nutrient Company they all use a different scales. I use ec instead.

 

xtsho

Well-Known Member

Dec 13, 2020

• #3

Most people on this site go by 500

 

calvin.m16

Well-Known Member

Dec 13, 2020

• #4

It depends on brand of meter and so on. It's hard to assume what scale they're using. Either way they are kinda close but I prefer EC for this reason.