PPM (700 Scale) to EC Converter
980 PPM on the 700 scale is 1,400 µS/cm. Reverse conversion for Truncheon users.
Calculator
PPM (700 Scale) to EC Converter
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980 PPM on the 700 scale is 1,400 µS/cm. Reverse conversion for Truncheon users.
How to use this calculator
- Enter PPM (700).
- Divide by 0.7.
- Read EC.
The formula
EC = PPM ÷ 0.7 (700 scale)
Reverse of 700-scale EC→PPM.
What the units mean
PPM (parts per million) — one part of solute per million parts of the total mixture. The workhorse unit for trace concentrations in water, air, and food.
µS/cm — microsiemens per centimeter, the unit of electrical conductivity (EC) that meters actually measure before converting to a PPM estimate.
Worked example
980 PPM → 1,400 µS/cm.
Quick reference
| PPM | EC |
|---|---|
| 700 | 1,000 |
| 980 | 1,400 |
| 1,400 | 2,000 |
700 scale.
Where you will actually use this
Matches 700-scale charts to EC meters.
- Truncheon calibration
- EU chart use
Mistakes that give wrong answers
- Mixing with 500-scale charts
Key takeaways
- Formula: EC = PPM ÷ 0.7 (700 scale)
- Remember: 700 scale.
- Watch out for: Mixing with 500-scale charts
- Next step: run your own numbers in the calculator above, then verify with a measurement — calculated values are only as good as the inputs.
Frequently asked questions
How do you convert 700-scale PPM to EC?
Divide by 0.7.