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Analytical balance — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Analytical_balance
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-09T00:52:26.011Z
SHA-256 of the archived text: f1b23ebf907b72c09ef5d0e154f00f6a4373cdee46676bb38df495a8b95b6aaf
Stable URL of this page: https://metraipolis.com/documento/dc_f06ceefcc89e

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Analytical balance — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Analytical_balance (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_f06ceefcc89e (Metraipolis archive dc_f06ceefcc89e, sha256 f1b23ebf907b72c09ef5d0e154f00f6a4373cdee46676bb38df495a8b95b6aaf)

BibTeX

@misc{dcf06ceefcc89e,
  title = {Analytical balance — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Analytical_balance},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_f06ceefcc89e; sha256 f1b23ebf907b72c09ef5d0e154f00f6a4373cdee46676bb38df495a8b95b6aaf},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Analytical_balance. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

An analytical balance (or chemical balance) is a class of balance designed to measure small mass in the sub-milligram range. The measuring pan of an analytical balance (0.1 mg resolution or better) is inside a transparent enclosure with doors so that dust does not collect and so any air currents in the room do not affect the balance's operation. This enclosure is often called a draft shield. The use of a mechanically vented balance safety enclosure, which has uniquely designed acrylic airfoils, allows a smooth turbulence-free airflow that prevents balance fluctuation and the measure of mass down to 1 μg without fluctuations or loss of product. Also, the sample must be at room temperature to prevent natural convection from forming air currents inside the enclosure and causing an error in reading. Single pan mechanical substitution balance is a method of maintaining consistent response throughout the useful capacity of the balance. This is achieved by maintaining a constant load on the balance beam and thus the fulcrum, by subtracting mass on the same side of the beam as which the sample is added. Electronic analytical scales measure the force needed to counter the mass being measured rather than balancing a beam with reference masses. As such they must have calibration adjustments made to compensate for gravitational differences from changing locations and altitudes. They use an electromagnet to generate a force to counter the sample being measured and output the result by measuring the power (and resulting force) needed to achieve balance. Such a measurement device is called an electromagnetic force restoration sensor. There are three main types of analytical balances, electronic analytical balances, single-disk analytical balances, and electro-optical analytical balances. Electronic analytical balances are one of the commonly used instruments in chemical laboratories. The original mechanical analytical balance was developed in the mid-18th century by Joseph Black, a Scottish chemist and physicist.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (deposito sistematico; retro-catalogo: tutte le voci di Wikipedia in inglese, in ordine alfabetico).
Fonte: Wikipedia in inglese, voce «Analytical balance» — https://en.wikipedia.org/wiki/Analytical_balance
Wikidata Q465601: «shrouded weighing scale for measuring precise masses» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q465601
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Analytical_balance?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1341087276, consultata il 2026-11-09T00:48:55.984Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 230e922d6a7335b65068e159f902498aef14cbbb39bad674b0b2934a184b7848