ES Industries has developed a wide range of Chromegabond reverse phase columns to provide the means of separating a broad range of compounds. These phases are manufactured using established procedures and have been produced for a number of years to provide the chromatographer/QC chemist with continuous stream of highly reproducible columns. Chromegabond Reverse Phase Columns provide superior, reproducible separations and long column life with excellent peak symmetry. We have listed only the most popular sizes, however, all of the listed phases are available in any column dimensions that may be required.

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Column Type	Stainless Steel Glass Lined Stainless Steel PEEK ™ Ultra High Pressure Steel
Column Length	1 cm 2.5 cm 3 cm 3.5 cm 5 cm 6 cm 7.5 cm 10 cm 12 cm 12.5 cm 15 cm 20 cm 25 cm 30 cm 50 cm 60 cm
Column Diameter	0.5 mm 0.75 mm 45 mm 3.2 mm 3.9 mm 1.0 mm 2.0 mm 3.0 mm 4.0 mm 4.6 mm 9.6 mm 23 mm 7.5 mm 50 mm 4.2 mm 75 mm 100 mm 6.0 mm 30 mm 15 mm
Particle Size	3 u 5 u 10 u
Pore Diameter	500 A 1000 A 100 A 60 A 300 A 4000 A
Fitting Type	Inverted Female Compression Cartridge or Capillary Titanium Frits
Phase	Chromegabond Phenyl BD Chromegabond Cyano HS RP Chromegabond MC CC6 Cyclohexyl Chromegabond C8 BD n-Octyl BD Chromegabond Triamine RP Chromegabond C4 n-Butyl Chromegabond ODS-Al Chromegabond HC C18 Chromegabond Amine RP Chromegabond MC8 n-Octyl EC Chromegabond Alkyl Phenyl Chromegabond HC C8 Chromegabond C3 n-Propyl Chromegabond C18 BD ODS-BD Chromegabond BAS Phenyl Chromegabond Cyano BD Chromegabond C6 n-Hexyl Chromegabond Cyano RP Chromegabond BAS C18 Chromegabond Diol RP Chromegabond C8 n-Octyl Chromegabond Diamine RP Chromegabond TMS C1 Chromegabond C18 Octadecyl Chromegabond BAS C8 Chromegabond BAS Cyano Chromegabond C2 Dimethyl Chromegabond MC18 Octadecyl EC

Phase	Phase Description	Preferred Application
BAS	BAS	Available as a C8, C18, Phenyl, and Cyano
BAS-CN	BAS Cyano	Offers different selectivity than C8, C18, and Phenyl
BAS-P	BAS Phenyl	Moderately polar compounds.  Retention characteristics are similar to C8 packing, but with different selectivity for polycyclic aromatic hydrocarbons, polar aromatics and fatty acids.
HC-C18	Chromegabond HC C18	ODS stationary phase with 22% bonded carbon
TMS (C1)	Tri-Methyl	Low-polarity, separation of mixtures with differing retention
C2	Dimethyl	Retention times on this phase are much shorter than other RP phases
C3	n-Propyl	Same as C2, but more stable
C4	n-Butyl	Separation of peptides and proteins
C6	n-Hexyl	Even coverage, very suitable for mobile phase additives
MC-CC6 endcapped	Cyclohexyl	Cyclohexyl but endcapped to making it more suitable for polar solutes. Extremely useful for herbicides and other related compounds
C8	n-Octyl	Reversed phase and ion-pairing chromatography. Moderately to highly polar (water soluble compounds) such as small peptides, proteins, steroids, nucleosides, and pharmaceuticals
MC-8 endcapped	n-Octyl	Same as C8 but endcapped to make it more suitable for polar solutes
C18	Octadecyl	Nonpolar to moderatelypolar compounds such as fatty acids, clycerides, polyaromatic hydrocarbons, esters, fat-soluble vitamins, steroids, prostaglandins and pharmaceuticals.
MC-18 endcapped	Octadecyl	Same as C18 but endcapped to make it more suitable for acids and bases
AP	Alkyl Phenyl	Moderately polar compounds. Retention characteristics are similar to C8 packing, but with different selectivity for polycyclic aromatic hydrocarbons, polar aromatics and fatty acids.
C8-BD	Disopropyl/Octyl	Same as C8, but highly base deactivated using steric shielding
C18-BD	Disopropyl/Octadecyl	Same as C18, but highly base deactivated using steric shielding
P-BD	Disopropyl/Phenyl	Same as AP, but highly base deactivated using steric shielding
CN	Cyano	Offers different selectivity than C8, C18, and Phenyl
CN-BD	Disopropyl/Cyano	Same as CN, but highly base deactivated using steric shielding
CN-HS	Cyano	Same as CN, but higher surface area
C18-AI	Octadecyl with amide linkage	Use for the separation of weak acids
D/RP	Diol	Diol for reverse phase
A/RP	Amino	NH2 amine for reverse phase, used for sugars
DA/RP	Diamine	Diamine for reverse phase
TA/RP	Triamine	Triamine for reverse phase