Bio-Rad HPLC Micro-Guard Cation H+ Refill Cartridges, 2 pack, 125-0129

New in package. Sells new for $380.

Pkg of 2, 30 x 4.6 mm, guard column, hydrogen form, pH range 1–3, for Aminex® hydrogen-form columns

Info from BioRad:

Use Micro-Guard Cation H Cartridges to protect any Aminex H-form HPLC Column. When run resolution begins to degrade, simply and quickly replace the cartridge.

Slurry-packed with material similar to Aminex H-Form Columns
Max pressure for cartridge in holder is 4,000 psi
Materials in contact with mobile phase are stainless steel and Kel-F
Maximum recommended temperature is 60°C
Shipping solvent is H2SO4
A single Micro-Guard Cartridge is housed in a reusable Standard Cartridge Holder (1250131). A Micro-Guard Cation H Cartridge can be paired with another guard cartridge (usually a Micro-Guard Anion CO3 Cartridge (1250506) in the reusable Deashing Cartridge Holder (1250139).
 _gsrx_vers_856 (GS 7.0.20 (856))