The OnGuard II Cartridges remove matrix interferences such as phenolics, metals, cations, anions, or hydrophobic substances encountered in many ion chromatography applications. These cartridges have wide pH stability and allow low level ion analysis.Cartridges are available in 1 cc and 2.5 cc high-capacity formats.
The OnGuard II hardware is designed with Luer inlets for easy and secure connections. The cartridge design eliminates leaks and channeling. The unique sample distribution frit maximizes complete resin bed usage. The cartridge hardware is optimized for the best possible performance in matrix removal or concentration applications.
All OnGuard II products are shipped with a Certificate of Analysis verifying product capacity, performance, and cleanliness.
Samples are easy to process. Samples can be passed through the cleanup cartridge directly into the LC injector valve loop using a Luer-style syringe. Alternatively, samples can be processed in parallel using the OnGuard Sample Prep Station.
The OnGuard II family of sample pretreatment cartridges is available in a wide range of packings and in two sizes(1-cc and 2.5-cc) to fit your sample pretreatment needs. In addition, resins are available in the Auto OnGuard™ syringe barrel format for robotic processing as custom order products. The Summary tab contains a table summarizing the OnGuard products and their typical applications.
Cartridges can be used singly or in series depending on the matrix interferences to be removed. The OnGuard Ba, OnGuard Ag, and OnGuard H cartridges can be used in series to remove sulfate, chloride, and carbonate from a water sample prior to trace-level determination of bromate.
OnGuard II A | |||
OnGuard II A Cartridges, 1 cc, Pkg of 48 | 057091 | ||
OnGuard II A Cartridges, 2.5 cc, Pkg of 48 | 057092 | ||
OnGuard II Ag | |||
OnGuard II Ag Cartridges, 1 cc, Pkg of 48 | 057089 | ||
OnGuard II Ag Cartridges, 2.5 cc, Pkg of 48 | 057090 | ||
| |||
OnGuard II Ag-H Cartridge, 2.5 cc, Pkg of 48 | 057410 | ||
OnGuard II Ba | |||
OnGuard II Ba Cartridges, 1 cc, Pkg of 48 | 057093 | ||
OnGuard II Ba Cartridges, 2.5 cc, Pkg of 48 | 057094 | ||
OnGuard II Ba/Ag/H | |||
OnGuard II Ba/Ag/H Cartridges, 2.5 cc, Pkg of 48 | 063955 | ||
OnGuard II H | |||
OnGuard II H Cartridges, 1 cc, Pkg of 48 | 057085 | ||
OnGuard II H Cartridges, 2.5 cc, Pkg of 48 | 057086 | ||
OnGuard II M | |||
OnGuard II M Cartridges, 1 cc, Pkg of 48 | 057137 | ||
OnGuard II M Cartridges, 2.5 cc, Pkg of 48 | 057095 | ||
OnGuard II Na | |||
OnGuard II Na Cartridges, 1 cc, Pkg of 48 | 062948 | ||
OnGuard II Na Cartridges, 2.5 cc, Pkg of 48 | 062962 | ||
OnGuard II P | |||
OnGuard II P Cartridges, 1 cc, Pkg of 48 | 057087 | ||
OnGuard II RP | |||
OnGuard II RP Cartridges, 1 cc, Pkg of 48 | 057083 | ||
OnGuard II RP Cartridges, 2.5 cc, Pkg of 48 | 057084 | ||
OnGuard Accessories | |||
OnGuard Sample Prep Workstation | 039599 | ||
OnGuard Needle, 18 Gauge, 1.25/Luer | 039996 | ||
OnGuard Valve, Stopcock Luer | 040896 |