HPLC Guard Columns and Cartridges
Waters Corp Nova-Pak C8 Sentry Guard Cartridge, 60Å, 4 µm, 3.9 mm X 20 mm, 2/pk
Nova-Pak C8 columns are general purpose, silica-based, reversed-phase C8 columns that are based on 4 µm particle technology. Compared to a 5 µm column, Nova-Pak columns offer higher resolution, more efficient separations, and faster chromatography.
Waters Corp ACQUITY UPLC HSS Cyano (CN) VanGuard Pre-column, 100Å, 1.8 µm, 2.1 mm X 5 mm, 3/pk
ACQUITY UPLC HSS CN chemistry is an ultra-performance general purpose propyl cyano bonded phase that provides superior peak shape for bases, increased retention, and extremely long column lifetimes at low pH. ACQUITY HSS CN columns are fully scalable and transferable to HPLC separations.
Sepax Technologies Inc Sepax HPLC Column BR-C18, Guard cartridge with holder, 3 µm, 120 Å, 4 x 10 mm
Utilizing highest purity and enhanced mechanical stability silica and pure bonding reagents, BR-C18 bonded phases have been innovatively and specially designed to ensure maximum surface coverage and full end-capping, which leads to carbon content as high as 19.0%. The bonding chemistry is completely controlled that results in very reliable column-to-column reproducibility. The maximum surface coverage allows BR-C18 to have exceptional stability, resulting in high pH stability in the range of 1.5 to 10.5.
Waters Corp XBridge BEH C8 Sentry Guard Cartridge, 130Å, 3.5 µm, 3 mm X 20 mm, 2/pk
The XBridge BEH C8 sorbent is less retentive compared to the XBridge BEH C18 sorbent. Anyone developing methods may prefer the speed offered by a less retentive column, while improving peak shape and chromatographic performance. The trifunctionally bonded sorbent offers you the widest usable pH range (1-12), superior low pH stability, and ultra-low column bleed.
Waters Corp Viridis BEH 2-Ethylpyridine VanGuard Pre-column, 130Å, 1.7 µm, 2.1 mm X 5 mm, 3/pk
Designed and tested for the ACQUITY UPC2 system, the Viridis sub-2-µm and 3.5 µm columns demonstrate high efficiency and resolution. The reduction and control of surface silanol activity on Viridis particles delivers, under SFC conditions, excellent peak shapes — without the use of mobile-phase additives — even for well-retained basic achiral compounds.
Waters Corp XBridge Protein BEH SEC Guard Column, 200Å, 2.5 µm, 7.8 mm X 30 mm, 1/pk;
XBridge Protein BEH SEC Guard Column, 200Å, 2.5 µm, 7.8 mm X 30 mm, 1/pk;
Agilent Technologies AGILENT INFINITYLAB POROSHELL
120 EC-C18, 2.1 x 5 mm, 2.7 m, guard column, 3/pk
Agilent Technologies POROSHELL 120 2.7UM FAST GUARD
InfinityLab Poroshell HPH-C18, 4.6 mm, 2.7 m, UHPLC guard, 3/pk
Waters Corp Porasil Silica Radial-Pak Guard, 125Å, 15 - 20 µm, 25 mm X 10 mm, 2/pk
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.
Waters Corp Bondapak C18 Radial-Pak Guard, 125Å, 15 - 20 µm, 40 mm X 10 mm, 2/pk
Bondapak C18 is available in two different particle sizes, 15-20µm and 37-55µm, providing easy method transfer from µBondapak through preparative scale up. If you are developing a new purification protocol, Bondapak provides the best balance between resolution, throughput and cost.