C4 Guard Columns

#229565
10 mm x 10 mm, 5 μm,
300 Å pore size 
$800
#229610
21.2 mm x 10 mm,
5 μm, 300 Å pore size 
$650
#229615
30 mm x 10 mm,
5 μm, 300 Å pore size
$1,000