Single cavity HPLC reservoirs (U.S. Patent: Des. 341,205) have one central cavity for a mobile phase inlet filter; an autoclavable red plastic coat (not shown) that absorbs UV up to 385nm; and a 45mm thread cap. While these reservoirs do not permit the rapid mixing of the TORNADO HPLC reservoirs, they can be stirred by placing a plus type stirring bar (listed below) in the inlet filter cavity just below the inlet filter.
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