Zymo Research C1104-25 Zymo-Spin IIC-XLR Columns, Capped, No Collection Tubes, 25 Columns/Unit - 11-502XL | Genesee Scientific Zymo Research C1104-25 Zymo-Spin IIC-XLR Columns, Capped, No Collection Tubes, 25 Columns/Unit - 11-502XL | Genesee Scientific