Reply To: Chemistry letter indicator

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Lindy Walton

Hi, this is Betty replying instead of Lindy.
See Rule VIII, Section 51 of the Nemeth Braille Code. Since the abbreviation, m, is not followed by a period (that applies to it)it must be preceded by the English-letter indicator (dots 56). The same applies to the abbreviation, g, for grams. Even when a superscript is applied to the abbreviation, you must still use the letter indicator.
See also Rule IX, Section 55c.ii. for the use of contractions to, into, and by with abbreviations.
Hope this clarifies your questions.