supply of ph analyzer , supply of ph analyser complete assembly including ph sensor , transmitter , pneumatic operated retractable assembly ( automatic ) and all required accessories , supervision for erection & commissioning ( if required ) , shop testing , inspection ( including third party ) , supply of commissioning and mandatory spares as per material requisition number s-17047-4-imr1011 for following tags , , at-920201 , at-920501 , supervision of erection , testing & commissioning item mentioned in 1 . 00 above . , overtime rate / hour beyond normal 8 hours work on normal working days . , per diem charges for up to 8 hours on weekly off days / holidays ( as applicable to project site ) , overtime rate / hour for work on weekly off days / holidays ( as applicable at project site ) . , supply of ph analyser complete assembly including ph sensor , transmitter , flow through chamber and all required accessories , supervision for erection & commissioning ( if required ) , shop testing , inspection ( including third party ) , supply of commissioning and mandatory spares as per material requisition number s-17047-4-imr1011 for tag no . at-921501