How to safely remove the cap of a 1.3mm MAS rotor in solid-state NMR?

23 September 2024 0 721 Report

We’ve been encountering difficulties lately in removing the caps from 1.3mm MAS rotors after assembly, even though we've carefully cleaned the interfaces and used liquid nitrogen or ultrasound for assistance. As everyone knows, the caps and bases of these 1.3mm rotors are quite expensive, so I'm wondering if anyone has any common methods or tips to handle this?

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