( ( Piston-driven ( air ( displacement pipettes ) ) ) ( ( are ( ( micropipettes , ) ( which ( ( ( are ( tools ( to ( ( handle ( volumes ( of liquid ) ) ) ( in ( the ( microliter scale ) ) ) ) ) ) ) and ) ( are pipettes ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Piston-driven) (NN air) (NN displacement) (NNS pipettes)) (VP (VBP are) (NP (NP (NNS micropipettes)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VP (VBP are) (ADJP (JJ tools) (S (VP (TO to) (VP (VB handle) (NP (NP (NNS volumes)) (PP (IN of) (NP (NN liquid)))) (PP (IN in) (NP (DT the) (NN microliter) (NN scale)))))))) (CC and) (VP (VBP are) (ADJP (JJ pipettes)))))))) (. .)))
Piston-driven air displacement pipettes are micropipettes, which are tools to handle volumes of liquid in the microliter scale and are pipettes.
(ROOT (S (NP (NNS Micropipettes)) (VP (VBP are) (ADJP (JJ suitable) (PP (IN for) (S (VP (VBG measuring) (NP (NP (ADJP (RB very) (JJ small)) (NNS amounts)) (PP (IN of) (NP (NNS liquids))))))))) (. .)))