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Forty representative pesticides were selected based on guidance from the AOAC Method-Centric Committee on Pesticide Residues to conduct a multilaboratory validation study of the single- laboratory validated (SLV) method using two representative brands of tea. The representative pesticides selected for the multilaboratory YDOLGDWLRQ VWXG\ RI WKH 6/9 PHWKRG DUH DV IROORZV ƍ ''( ƍ ''( EHQDOD[\O ELIHQWKULQ EURPRSKRV HWK\O EURPRSURS\ODWH FKORUIHQDS\U GLÀXIHQLFDQ GLPHWKHQDPLG IHQFKORUSKRV SLFR[\VWURELQ SLULPLFDUE SLULPLSKRV PHWK\O SURF\PLGRQH SURS\]DPLGH S\ULPHWKDQLO TXLQR[\IHQ WHÀXWKULQ WROFORIRV PHWK\O DQG WULÀXUDOLQ E\ *& 06 DQG *& 06 06 DQG DFHWRFKORU EHQDOD[\O EHQVXOLGH EXWUDOLQ FKORUS\ULIRV FORPD]RQH GLD]LQRQ HWKRSURSKRV ÀXWRODQLO LPLGDFORSULG LQGR[DFDUE NUHVR[LP PHWK\O PRQROLQXURQ SLFR[\VWURELQ SLULPLSKRV PHWK\O SURSR[XU TXLQR[\IHQ WHEXIHQS\UDG WULDGLPHIRQ DQG WULÀR[\VWURELQ E\ /& 06 06 LOQs for the 653 pesticides included in the SLV ranged from WR ȝJ NJ /2'V RI WKH *& 06 PHWKRG UDQJHG IURP WR ȝJ NJ DQG WKH FRUUHVSRQGLQJ /24V UDQJHG IURP WR ȝJ NJ /2'V RI WKH *& 06 06 PHWKRG UDQJHG IURP WR ȝJ NJ DQG WKH FRUUHVSRQGLQJ /24V UDQJHG IURP WR ȝJ NJ /2'V RI WKH /& 06 06 PHWKRG UDQJHG IURP WR ȝJ NJ DQG WKH FRUUHVSRQGLQJ /24V UDQJHG IURP WR ȝJ NJ $ WRWDO RI RI WKH SHVWLFLGHV FDQ EH DQDO\]HG E\ *& 06 DQG *& 06 06 ZKLOH RI WKH SHVWLFLGHV FDQ EH DQDO\]HG E\ /& 06 06 ZLWK /2'V ” ȝJ NJ 7KHUH DUH RXW RI WKH SHVWLFLGHV WKDW FDQ EH DQDO\]HG E\ *& 06 DQG RXW RI E\ /& 06 06 ZLWK /2'V ” ȝJ NJ 7KHUH DUH SHVWLFLGHV WKDW FDQ EH DQDO\]HG E\ ERWK *& 06 DQG /& 06 06 2I WKHVH WKHUH DUH SHVWLFLGHV WKDW FDQ EH DQDO\]HG E\ *& 06 DQG E\ /& 06 06 ZLWK /2'V ” ȝJ NJ IRU WKH *& 06 PHWKRG 7KHUH DUH

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