Long Column Lifetimes and Excellent Performance
Ultra-pure, metal-free silica (99.99 % purity) is the back bone of all Luna material. The resulting high quality particles have a surface smoothness, pore structure, and pore consistency to ensure a more uniform particle shape and greater reproducibility.

Waters® Symmetry®

Proven Reproducibility
For carboxyl‚ carbonyl‚ and amine containing compounds‚ Luna CN columns offer a unique polar selectivity in reversed phase and normal phase modes. Luna CN columns provide sharp peaks and great reproducibility run-to-run‚ column-to-column and batch-tobatch. State of the art modification of the silca surface ensures improved resistance to bonded phase hydrolysis providing one of the most stable CN phases on the market. The result:
- Excellent polar selectivity
 - Improved peak shapes
 - One of the most stable CN columns under reversed phase or normal phase conditions
 - pH stable from 1.5 to 7.0
 
Phthalate Esters
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 Column: 
 Luna 5 μm CN  
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 Dimension: 
 150 x 4.6 mm  
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 Part No.: 
00F-4255-E0 
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 Mobile Phase: 
A: Hexane B: Methylene chloride/Methanol (80:20)‚ A/B (99:1) 
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 Gradient: 
Time (min) 
 0 
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 %B 
35  | 
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 Flow Rate: 
1.0 mL/min 
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 Temperature: 
Ambient 
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 Detection: 
UV @ 254 nm 
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 Sample: 
1. Di-n-octyl phthalate 2. Bis (2-Ethylhexyl) phthalate 3. Butylbenzyl phthalate 4. Di-n-butyl phthalate 5. Diethyl phthalate 6. Dimethyl phthalate 
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