Transparent quartz tubes 25mm OD x 450 mm length; 1.5mm wall thickness combustion and reduction. For CM-5000 combustion module.$65.00 Transparent quartz tubes 25mm OD x 450 mm length; 1.5mm wall thickness combustion and reduction. For CM-5000 combustion module. quantity Add to cart Category: Combustion and reduction tubes Related products Add to cart Combustion Tube, Sulfur $60.00 Add to cart 0.8 m Packed column for SO2 $150.00 Add to cart Inserts, Alumina For The Turbo N 4040 Combustion Tubes $25.00