The best replacement for ec is ppm.

The best alternatives to ec are rated as following:
★★★★★  ppm
★★★★  tds
★★★  eu
★★★  eca
★★  eca stack
★  private condo
★  sslf
★  clen
★  hdb
★  eec
  depakote er
  bto
  headline sc
  elyria
  6e
  non internet ec
  dbss
  er
  ic

Your alternative for ec is not listed? Suggest!
Speaking about ec, one probably shouldn't forget about lean xtreme.

Other search terms related to ec and their ratings are:
★★★★★ lean xtreme
You have in mind a companion for ec and it is not yet here? Propose!



Google Trends

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ec
ppm
tds