In our standard 4um material, currently the largest ID we pack is 30mm. This is threaded hardware whereas larger IDs such as 50mm generally must be flanged or bolted. You may want to consider the 21.2mm ID as well, since cost increases at larger diameters.

When logged in on the website, you can view the prep column dimensions that are available at a given stationary phase’s product page. There are a series of tabs under Ordering Information. The default setting is “View All” but you can change this to “Preparative Columns” to view only those items.

Our Cogent prep columns are made to order so delivery could take up to 12 business days but it is always best to check with our customer service department for current information.

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