Procurement of spares mentioned in technical specification

Flame safety lamp gl-7 model volex, dgms approved lamp for gassy mines with a fixed filament unit fuel petrol or esso solvent 1425,flame safety lamp gl-50 model volex gl-50, dgms approved lamp for gassy mines spirit or petrol use as fuel for detecting methane,methanometer ch4 sensor range 0-100 percent,toximeter sensor range 0-1999 ppm,oximeter 02 sensor range 0-30 percent volume,multi gas detector with ch4 sensor ch4 0-100 percent lel, co 0-2000ppm, o2 0-25 percent volume, no2 0-50 ppm,multi gas detector with hydrocarbon, co, o2 and h2s sensors, hc 0-100 percent lel co 0-2000ppm o2 0-25 percent volume h2s 0-100ppm,explosimeter ch4 sensor 0-100 percent volume