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"The 1 mL columns kits are manufactured exclusively by Astrea Bioseparations Ltd (Astrea) and are constructed of polypropylene. The column kits are comprised of 4 inexpensive, re-usable, pre-packed columns, each containing 1 mL of a different IEX adsorbent. The column kits allow for rapid, accurate and cost effective method development, small scale purification runs or as single-use disposable columns for contaminant removal conditions. The IEX Selection kit consists of 1 x 1 ml Q PuraBead® HF Column, 1 x 1 ml SP PuraBead® HF Column, 1 x 1 ml DEAE PuraBead® HF Column and 1 x 1 ml CM PuraBead® HF Column"
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