bids are invited for custom bid for services - mrpl reference no 3900000558 item code 1041642 for amc for repairing servicing and calibration of msa and drager make single gas detector one sensor as per boq in gem bid document lump sum price for 130 nos including gst to .. , custom bid for services - item code 1041643 for amc for repairing servicing and calibration of msa and drager make gas detector two sensor as per boq in gem bid document lump sum price for 25 nos including gst to be quoted , custom bid for services - item code 1041644 for amc for repairing servicing and calibration of msa and drager make gas detector three sensor as per boq in gem bid document lump sum price for 30 nos including gst to be quoted , custom bid for services - item code 1041645 for amc for repairing servicing calibration of msa drager make gas detector four sensor as per boq in gem bid document lump sum price for 70 nos including gst to be quoted , custom bid for services - item code 1041646 for lodging or boarding and to and fro charges for service engineer visit for calibration service and repair as per boq in gem bid document lump sum price for 2 nos including gst to be quoted