試し験けん済ずみ

noun which may take the genitive case particle 'no'

tested; tried; proven

Indicates that something has already been tested or tried and is known to work. Often used in technical or formal contexts.

• この方ほう法ほうは試し験けん済ずみで、安あん全ぜんです。

  This method has been tested and is safe.

• 試し験けん済ずみの製せい品ひんだけを出しゅっ荷かします。

  We ship only tested products.