Home ›ComplianceOnline Standards ›ISO ICS 71 CHEMICAL TECHNOLOGY ›  Assessment and Test Report (ATR) for IEC 60079-11 (1999) - electrical apparatus for explosive gas atmospheres Part 11: Intrinsic safety i (Please note: ATR60079-11 1999 (ed 4.0) is a modified format of previously issued ATRs and is for use on a trial basi