“2 m Packed column for Oxygen (molecular sieve)” has been added to your cart. View cart → 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 2 m Packed column for N2, CO2, H20, SO2 $300.00 Add to cart Inserts, Alumina For The Turbo N 4040 Combustion Tubes $25.00 Add to cart 1 m Packed column for Oxygen (molecular sieve) $200.00