You cannot add "4 M Packed Column For N2, Co2" to the cart because the product is out of stock. Reduction Tube, CHN$66.00 Reduction tube, CHN Out of stock SKU: 63003 Category: Combustion and reduction tubes Additional information Additional information Package 1 Related products Add to cart Alumina Combustion Tube $50.00 Add to cart Combustion Tube, Sulfur $60.00 Add to cart Seals for top of tubes $18.00