Tender For supply of repair service and calibration of lab equipments - calibration of ring and ball apparatus , repair and calibration including change of cells of electronic balance , repair and calibration of auto digital tds meter , calibration of thin flim oven , calibration of los angeles abrasion testing machine , repair servicing and calibration of bouncy balance , repair and calibration of cleveland open cup flash point , repair and servicing of hot plate , calibration of weighing scale , calibration of flakiness gauge , calibration of penetration apparatus