Shaw, G.
(2022),
MILLIGRAM MASS METROLOGY FOR QUANTITATIVE DEPOSITION OF LIQUID SAMPLES, Measurement: Sensors, [online], https://doi.org/10.1016/j.measen.2022.100380, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=932337
(Accessed September 12, 2024)
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MILLIGRAM MASS METROLOGY FOR QUANTITATIVE DEPOSITION OF LIQUID SAMPLES
Published
Author(s)
Abstract
Quantitative dispensing of liquids by mass becomes increasingly difficult as sample volume decreases. Whereas milliliter quantities of liquid can be directly weighed as dispensed on an analytical balance or using pycnometer methods, microliter samples are more challenging due to their milligram-scale mass and rapid evaporation. Here, a method for quantitative determination of the mass of 1 mm3 droplets of liquid is proposed. The weighing of a microcapillary pycnometer combined with traceable calibration masses and corrections for sample evaporation allows determination of the droplet mass of approximately 1 milligram with combined expanded uncertainty of 0.2 %.Citation
Measurement: Sensors
Volume
22
Pub Type
Journals
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Keywords
mass, milligram, liter, microliter, true becquerel, metrology
Citation
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Created May 22, 2022, Updated November 29, 2022