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Waters Porasil 15 - 20µm silica packing material provides long column life and low backpressure. The packing also has a high surface area making it ideal for preparative work.

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 WAT037672   Chromatography Consumables & Columns - Porasil Silica Cartridge - 15-20 um - 40 x 100 mm   $2,441.00
 WAT025852   Chromatography Consumables & Columns - Porasil Silica Cartridge - 15-20 um - 47 x 300 mm   $2,734.75
 WAT025874   Chromatography Consumables & Columns - Porasil Silica Column, 125, 15-20 m, 3.9 mm X 300 mm, 1/   $1,196.30
 WAT025835   Chromatography Consumables & Columns - Porasil Silica Prep Column, 125, 15-20 m, 19 mm X 300 mm   $4,112.15
 186002476   Chromatography Consumables & Columns - Porasil Silica Prep Column, 125, 15-20 m, 30 mm X 300 mm   $10,353.76
 WAT038502   Chromatography Consumables & Columns - Porasil Silica Radial-Pak Cartridge, 125, 15-20 m, 25 mm   $1,490.04
 WAT025853   Chromatography Consumables & Columns - Porasil Silica Radial-Pak Cartridge, 125, 37-55 m, 47 mm   $1,933.65
 WAT025877   Chromatography Consumables & Columns - Porasil Silica Radial-Pak Cartridge, 125, 40 m, 47 mm X   $19,336.78
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Colonial Scientific has teamed up with the industry leaders, Fisher Scientific and VWR, and now offers their entire product line. Colonial Scientific provides any part from the Fisher Scientific site with a part number.
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