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並前往https://www.levitt-safety.com/blog/units-of-measure-lel-vs-percent-by-volume-bv-vs-parts-per-million-ppm-vs-parts-per-billion-ppb/

Units of Measure: How to convert LEL to PPM, PPB or %BV

We put together this simple gas monitor reference guide so you can convert LEL to PPM or PPB or %BV with a methane example. Bookmark it now!

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