supply of supply, installation and commissioning of computer controlled bench top rotating disc electrode spectrometer ( rotating spectrometer for oil ) , a test certificate and warranty certificate is also required by the supplier, accepted make: petrolabs india pvt. ltd. or similar , supply, installation and commissioning of computer controlled bench top rotating disc elec trode spectrometer ( rotating spectrometer for oil ) , a test certificate and warranty certificate is also re quired by the supplier, accepted make: petrolabs india pvt. ltd. or similar [ warranty period: 30 months after the date of delivery ] ] , cost of amc for 6 years after completion of 30 months/2.5 years of warranty [ warranty pe iod: 30 months after the date of delivery ] ]