Convert Dram (dr) to Attoliter (aL) instantly.
About these units
Dram (dr)
The fluid dram is a small historical unit equal to 1/8 of a US fluid ounce or 3.6967 mL (US), with slightly different imperial values. It originated in apothecaries and early pharmaceutical texts, where drams measured potent liquid medicines, tinctures, and extracts. In daily life, drams appeared in old cocktail recipes, medicinal syrups, and household remedies. However, the inconsistency between US and UK drams, along with the rise of the metric system, pushed it out of modern use. Today, the dram survives mostly in whiskey culture—where a "dram" informally means a small pour, not a precise measurement—and in historical studies of medicine.
Attoliter (aL)
An attoliter is a staggering 10⁻¹⁸ liters, placing it firmly in the realm of molecular and nanoscale science. This unimaginably small volume corresponds to spaces comparable to the inside of viruses, nanopores, or clusters of biomolecules. Cutting-edge technologies like nano-droplet reactors, atomic force microscopy, and high-precision spectroscopy rely on attoliters to describe reaction chambers or sample sizes. The attoliter is so small that even a single bacterial cell has a volume approximately one million attoliters. This makes the unit essential for exploring the physical limits of chemical reactions and biological processes.