Nova-Pak Phenyl Sentry Guard Cartridge, 60Å, 4 µm, 3.9 mm X 20 mm, 2/pk

By lowering particle matter and chemical pollutants, Waters Sentry Guard Cartridges are frequently utilized as a practical and affordable approach to extend HPLC column life. There are two different holder designs available, one for use as a reusable end-fitting integrated into the Waters cartridge column and the other for use with any HPLC column. Both designs make it possible to swap out Sentry Guard Cartridges without using any tools and are compatible with the 4 µm silica-based particle Nova-Pak HP Phenyl columns. With reversed-phase applications, the phenyl ligand is used to achieve special chemical selectivity.

By choosing our tools, software, chemistries, and services, you have all the resources you require to complete any analysis successfully. For consistent, optimal performance of your Waters systems, only Waters Quality Parts have been evaluated and verified, making them compatible with your Waters instruments to the fullest extent. You can depend on reliable instrument performance, precise and repeatable results, and ongoing system compliance when you use Waters Quality Parts.

Utilizing the Phenyl-Hexyl bonding technology, the Nova-Pak Phenyl Sentry Guard Cartridge can support a pH range of 2 - 8 and a maximum pressure within the analysis of 6000 psi (or 415 Bar). This lab equipment also supports a particle size of 4 µm, a pore size of 60 Å, and a carbon load of 5%.

You can explore our website or look through our catalog to shop for lab equipment your lab needs. You can browse the broad range of Waters goods and services on our website, including additional lab supplies that can be utilized with the Nova-Pak Phenyl Sentry Guard Cartridge.

We recommend reviewing the MassPREP Protein Standard Mix as well; The MassPREP Protein Standard Mix includes ribonuclease A, cytochrome c, bovine serum albumin, myoglobin, enolase, and phosphorylase b. This combination contains several proteins with various molecular weights, isoelectric points, and hydrophobicities. These characteristics provide the user with a desirable intact protein mixture that can be applied in many ways. It is suggested that this standard be used frequently for assessing column and system performance, similar to the QCRM product line.

Nova-Pak Phenyl Guard Cartridge FAQs

What is the purpose of a guard cartridge?
Guard cartridges trap particulates and strongly retained compounds from the sample, preventing contamination of the main analytical column. This extends column life and ensures more consistent results.

Is the Nova-Pak Phenyl phase suitable for aromatic compounds?
Yes, the phenyl ligand offers enhanced selectivity for aromatic compounds and is especially useful in applications where pi-pi interactions aid separation.

Can I use this guard cartridge with any Nova-Pak column?
While this guard cartridge is optimized for the Nova-Pak Phenyl column, it may also be compatible with other Nova-Pak HP columns of the same dimensions, depending on the specific application and chemistry.

How often should I replace the guard cartridge?
Replacement depends on the cleanliness of your samples and frequency of use. It's recommended to replace the cartridge once backpressure increases or peak shapes deteriorate noticeably.

What are the storage recommendations for unused cartridges?
Store unused guard cartridges in their original, sealed packaging in a clean, dry environment at room temperature. Avoid exposure to moisture or corrosive vapors.