US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 611 — PRIMARY DRINKING WATER STANDARDSSubpart K611.49135 Ill. Adm. Code 611.491Laboratory Testing Equipment (Repealed)Last amended: 2019Year: 2026Length: 8 wordsOfficial source Section 611 Section 611.491 Laboratory Testing Equipment (Repealed)Previous35 Ill. Adm. Code 611.480