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 Pre-Packed Reactor For N, C/N Or Chn Analysis $155.00 Add to cart 0.8 m Packed column for SO2 $150.00 Add to cart Pre-packed reactor for Sulfur $110.00