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 Out of Stock Read more 4 M Packed Column For N2, Co2 $450.00 Add to cart ANCA Combustion/Reduction tubes $69.00 Add to cart Pre-packed reactor for Sulfur $110.00