The micropound (abbreviation μlb) is a small unit of avoirdupois weight and mass in the US and imperial systems of measurement, equal to one-millionth (1/1,000,000) pound. It is equal to exactly 453.59237/1,000,000 kg or about 453.6 μg.
See also English, US, & imperial units of measurement Avoirdupois pound
References
Citations
Bibliography "Appendix E: General Tables of Units of Measurement" (PDF), Checking the Net Contents of Packaged Goods, NIST Handbook 133, NIST, 2016.
