Installation Of Portable Digital Refractometer For Ethylene Glycol Range 0 To 100 Percent Volu Me, Freezing Point 0 To 50 C Or 32 To 50 F. Model: H196831 Of Hanna Instruments Or Similar. All Specificatio N Should Be As Per Attached Budgetary Quotation Catalogue. Warranty: 24 Months. Note: Related Gem Rele Ased Contract Attached For Gem Reference. [ Warranty Period: 30 Months After The Date Of Delivery ] ]