100% LEL | Maximum Instrument Reading |
50% LEL | 1/2 Amount Needed to Ignite Natural or Propane Gas |
20% LEL | Begin to Smell Gas Odorants |
10,000 PPM | Begin to Smell Gas Odorants |
500 PPM | Visible Bubbles from Leak Detection Solution |
100 PPM | Strong Instrument Tick |
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