I'm working on LC since two months ago (!), and in this moment I'm trying to buy a resin named TSK-Butyl (for HIC). The problem is that Merck web site indicates that this resin is not anymore being produced. Could some of you suggest any substitutive resin?

TSK is Toyosoda. Look at other websights!

Thank you Mr Anonymous, but TSK-protein A is not what I'm really looking for. TSK-Butyl is a resin for packing HIC columns and I would like to know which company does sell it.
Anyway, thank you again
Pedro

Dr. Annonymous was correct TSK is produced by someone other than Merk.

Try TosohBiosep.com. They have TSK resins in all manner of functionalities including the butyl HIC phase. Although at a quick glance it appears to be sold in columns not as a loose resin. Maybe the resin you seek is no linger listed in the catalog. YOu may want to give them a call.

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Dear Pedro, TSK-Butyl is available as TSKgel Butyl-NPR column, packed with 2,5µm non-porous polymer matrix, as MD (method development) glass columns as Toyopearl MD-G Butyl-650S 35µm, or as bulk material Toyopearl Process resins Butyl-650 S 35µm, M 65µm or C 100µm! It is manufactured by Tosoh Corporation Japan, and available through Tosoh's subsidiaries Tosoh Biosep LLC (USA) and Tosoh Biosep GmbH (Europe). Please check out our webside at www.tosohbiosep.de! If you need assistance in column packing, please feel free to contact us. Good luck. Gerhard

Thank you very much Anonymous and, specially, Gerard Kratz. You are great! I've really appreciate your hepful comments, I have already visited 3w.Tosohbiosep.com and I found there all the information that I need, next step is to begin the bench scale experiments with my proteins. We keep in touch,
Pedro