Products
SunArmor
Further Evolution of surface modification
Combination of novel end-capping reagent with an ethylene chain and sunniest end-capping leads a silica C18 column to be stable under pH12 condition. Although Sunniest end-capping leaded to stability under pH10 condition.
SunArmor C18 can be used at pH range of a mobile phase between 2 to 12. This is almost same durability to compare with a hybrid C18s column. Furthermore SunArmor C18 shows better shape for acidic, basic and metal chelating compounds than the other hybrid C18 because of little residual silanol groups.
| The basic characteristics of the SunArmor | ||
|---|---|---|
| C18 | RP-AQUA | |
| Particle size | 3 µm, 5 μm | 3 µm, 5 μm |
| Pore size | 12 nm | 12 nm |
| Specific surface area | 340 m2/g | 340 m2/g |
| Bonding | C18 | C28 |
| USP L No. | L1 | Equivalent to L62 |
| Carbon content | 17% | 18% |
| Use pH range | 2 - 12 | 2 - 10 |
Features of SunArmor
High durability under basic pH condition
Duration test condition
- Column size: 50 x 2.1 mm
- Mobile phase: Methanol/10 mM Ammonium bicarbonate (pH 10.5, Adjust with ammonia water) = 30/70
- Flow: 0.8 mL/min
- temperature: 60 ºC
Measurement condition
- Mobile phase: Acetonitrile / water = 60/40
- Flow: 0.2 mL/min
- temperature: 60 ºC
- Sample: Butyl benzene
SunArmor showed almost same durability or more to compare with the other hybrid C18.
High durability in a neutral and high temperature conditions
Duration test condition
- Column size: 50 x 2.1 mm
- Mobile phase: Methanol / 10 mM Ammonium acetate (pH 6.8) = 30/70
- Flow: 0.2 mL/min
- temperature: 80 ºC
Measurement conditions
- Mobile phase: Acetonitrile / water = 60/40
- Flow: 0.2 mL/min
- temperature: 60 ºC
- Sample: Butyl benzene
SunArmor C18 showed much more durability under neutral pH and high temparature condition than the conventional C18 and AQ C18.