| http://www.w3.org/ns/prov#value | - , but when used are snapped into a supporting member such as a rack or a holder, disposable tubes; re-usable tubes; tubes that are sealed to limit contact of their contents with air and/or moisture during storage or transport; tubes that are sealable and re-sealable, such as having a removable, or flip-up cap; tubes that can be labeled for a single use, or labeled for multiple uses; tubes that are
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