filtrata

Filtrata is a term used in science to refer to the liquid that has passed through a filter, separating it from the solid material retained by the filter. In English, the standard term is filtrate (plural filtrates); filtrata appears in some languages or as a Latin form.

In physiology, the glomerular filtrate is the fluid filtered from blood plasma by the kidney’s glomeruli. It is similar to plasma but lacks blood cells and most proteins; it contains water, ions, glucose, amino acids, urea and other small solutes. The filtrate enters the renal tubules, where reabsorption and secretion modify its composition to form urine.

In laboratory chemistry and microbiology, the filtrate is the liquid portion recovered after filtration. Its composition depends on the original mixture and the filter’s pore size; filtration removes solids, which remain as the residue. Filtrates are analyzed for dissolved substances and may be sterile or non-sterile depending on the process. Filtration clarifies solutions, separates components, or isolates soluble products.

Filtration methods include gravity filtration, suction (vacuum) filtration, and membrane filtration (including microfiltration and ultrafiltration). The choice of method influences the purity and composition of the filtrate and the material that remains as residue.

In botany and medicine, filtrates can refer to extracts obtained by filtering plant or microbial materials; such filtrates may be used in experiments or as starting material for further processing. See also filtration, filtrate, residue.