filtrerades

Filtrerades is a Swedish verb form, the preterite (past) passive of filtrera, meaning to filter. It indicates that something was subjected to filtration in the past, without specifying the agent. The agent can be expressed with a phrase such as av någon or by using a by-phrase.

In Swedish, the passive voice is commonly used in formal and scientific writing to describe procedures and results. Filtrerades is the past passive form, corresponding to “was/were filtered” in English. The present passive form is filtreras, and the active past form is filtrerade. The corresponding past participle is filtrerad.

Examples help illustrate usage. Vattnet filtrerades genom ett kolfilter, meaning The water was filtered through a carbon filter. Avvikelsen filtrerades bort under granskningsprocessen, meaning The anomaly was filtered out during the review process. In contrast, an active sentence would use filtrerade in the subject’s role, as in Företaget filtrerade listan för att ta bort dubbletter (The company filtered the list to remove duplicates).

Noun forms related to the process include filtrering (filtration) and the adjective filtrerad (filtered). Filtrerades can be complemented by agents introduced with av, for example av operatören eller av ett särskilt filter, to specify who or what performed the filtration, when needed.

See also: filtrering, filtrerad, filtrera.