>  (HPLC)columns

The Whatman Partisil® is a high purity irregular silica gel available in both 5 µm and 10 µm particle sizes with a pore size of 80Å. The choice of column packing includes Silica, C-18 polymeric phases (ODS-3,ODS-2) and C-8. Also available are SAX (Strong Anion Exchanger), SCX (Strong Cation Exchanger) and PAC (Polar Amino Cyano). These columns provide reproducible results, column to column, lot to lot.

Due to the greater surface area of the irregular Partisil, the medium offers enhanced selectivity and loading capacity. Through uniform particle sizing, back pressure is minimized. Also, the neutral pH of Partisil provides for better peak symmetry without the need for mobile phase modifiers.

Standard Analytical
4.6 mm ID x 25 cm long, standard analytical column for research, methods development and routine separations. After optimization, other sizes can be considered for greater speed or capacity. Allows direct scale-up or scale-down to other size columns. Supplied with Whatman compression screw end fittings.

RAC II
4.6 mm ID x 10 cm long. Second-generation Rapid Analysis Chromatography for faster analytical separations and reduced solvent consumption. Operates at low back pressure, even at high flow rates, prolonging column life. Connects easily to most LC instrumentation with convenient Whatman compression screw end fittings.

Magnum 9 (50 cm)
9.4 mm ID x 50 cm long. Semi preparative columns for microgram to gram quantities. Unique coned outlet allows high load capacity with minimal peak distortion. Durable construction ensures extended service. Magnum 9 columns are compatible with today's HPLC instruments, allowing you to use the same equipment for analytical and preparative work.

Magnum 9 (25 cm)
9.4 mm ID x 25 cm long.

Magnum 20 (50 cm)
22 mm ID x 50 cm long. Preparative columns for multigram separations. Coned outlet allows high load capacity with minimal peak distortion. Durable construction ensures extended service. Magnum 20 columns provide sufficient yield and resolving power to accomplish difficult separations on a single pass, achieving high product purity.

Magnum 20 (25 cm)
22 mm ID x 25 cm long.

Whatman void sealing (WVS) columns

Features and Benefits

• Void sealing columns can last twice as long as standard end fitting columns, saving as much as 50% on cost per test
• Available packed with spherical and irregular media
• Integral void sealing mechanism prolongs column life
• Reusable, hand tightened end-fittings save money, allow for wrench-less installation and rapid column changes
• Require no holder or module, meaning fewer components, reduced cost

Optimum Resolution

• Typical column efficiencies for:
• Partisil 10 µm media-45,000 N/m
• Partisil 5 µm media-65,000 N/m
• PartiSphere 5 µm media-90,000 N/m

Partisil® Irregular Media
Available in prepacked, replaceable columns and a choice of 5 µm and 10 µm phases. These include Silica, our popular ODS-3 and the other reversed phase packings ODS-2 and C-8. Also available are SAX (Strong Anion Exchanger), SCX (Strong Cation Exchanger) and PAC (Polar Amino Cyano).

Due to the greater surface area of the irregular Partisil, the medium offers enhanced selectivity and loading capacity. Through uniform particle sizing, back pressure is minimized. Also, the neutral pH of Partisil provides for better peak symmetry without the need for mobile phase modifiers.

PartiSphere® Spherical Media
Available in prepacked columns and a choice of 5 µm high performance phases. In addition to its efficient pure silica and monomeric C-18 and C-8, Whatman has added WCX (Weak Cation Exchanger) as well as SAX, SCX and PAC. PartiSphere media feature narrow particle size distribution and excellent reproducibility.

PartiSphere WVS Columns: Engineered to Provide Unsurpassed Consistency and Longevity

PartiSphere RTF
PartiSphere RTF (Reduced Tailing Factor) HPLC columns are base-deactivated columns. They employ a unique proprietary process that effectively "deactivates" the secondary chromatographic effect due to residual silanols. In addition, these columns are extremely stable and can be used from pH 2 to pH 8 with no loss in performance. Excellent for separation of basic compounds without the need for amine-modified mobile phases. PartiSphere RTF is available prepacked in Whatman Void Sealing (WVS) and Analytical (WCS) column configurations and in a choice of C-18, C-8 and cyano phases.

Features and Benefits

• All PartiSphere columns are guaranteed to perform reproducibly every time, thanks to multiple quality control tests for both primary and secondary separation mechanisms
• Polished internal column walls ensure packing symmetries and efficiencies
• PartiSphere RTF (Reduced Tailing Factor) employs a unique proprietary process that effectively "deactivates" the secondary chromatographic effect due to residual silanols

HPLC Guard Cartridge System

HPLC Guard Cartridge System

The prepacked, disposable plastic guard cartridge retains unwanted materials that can harm your analytical column. Used in a wide range of applications, the HPLC guard cartridge system offers high efficiency, convenience and cost savings. The guard cartridge holder is available in two configurations. The integral system attaches directly to and becomes an integral part of the WVS replacement column requiring no connecting tubing. Because of this, there is virtually no loss in efficiency.

The universal system can be used with any standard analytical column, bringing guard cartridge convenience to traditional HPLC columns. Guard cartridges are available in four phases: silica, reversed phase, anion exchanger and cation exchanger.

Zero-Dead-Volume
Guard columns offer protection by trapping unwanted compounds that would otherwise be strongly retained on the HPLC column. One of the problems inherent with other guard columns is that they either contribute too much dead volume or add to the analysis times of the separation (especially in short, high speed columns). Whatman has overcome this by developing a zero-dead-volume HPLC guard cartridge system which eliminates almost all extra void volume and does not detrimentally affect the separation.