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COSMOSIL SL-II

Normal Phase

Ultra-pure silica gel of more than 99.99% purity is used for the COSMOSIL SL-II packed column series. This column provides improved separation and reproducibility for compounds with carbonyl or phenol hydroxyl groups, which are often problematic to separate using conventional silica gel columns.

Specifications

Packing Material SL-II
Silica Gel High Purity Porous Spherical Silica
Average Particle Size 3, 5, 15 µm
Average Pore Size approx. 120 Å
Specific Surface Area approx. 300 m2/g
Stationary Phase · High purity Silica Gel (>99.99%) with specially treatment
· Suitable for preparative separation

Analysis of Acids and Amide without Ionic Additives

Column size: 4.6 mm I.D. x 250 mm
Mobile phase: Methanol : Hexane = 10 : 90
Flow rate: 1 ml/min
Temperature: 30°C
Detection: UV 254 nm, 0.5AUFS
Sample: 1. Benzoic Acid 4.0 µg
2. Salicylic Acid 6.0 µg
3. Salicylamide 4.0 µg

Comparison with Medium-pressure Columns

COSMOSIL SL-II offers sharper peak compared with packing materials for medium-pressure liquid chromatography and open chromatography.
Column 5SL-II A Company Cartridge
(30 µm silica gel)
B Company Cartridge
(60 µm silica gel)
Column Size 20 mm I.D. x 250 mm 26 mm I.D. x 104 mm 26 mm I.D. x 104 mm
Pressure 1.3 MPa 0.25 MPa 0.15 MPa
Chromatogram
Mobile phase: Ethanol : Hexane = 5 : 95
Flow rate: 10 ml/min
Temperature: Room Temperature
Detection: UV 254 nm
Sample: 1. p-Xylene 8.3 mg
2. Cinnamyl Alcohol 1.7 mg
3. p-Nitrobenzyl Alcohol 4.2 mg

Scaling Up from Analytical to Preparative Separation

COSMOSIL SL-II offers sharper peak compared with packing materials for medium-pressure liquid chromatography and open chromatography.
Step 1 Step 2 Step 3
Mobile phase is optimized by using 4.6 mm I.D. x 250 mm column Maximum load capacity is optimized by using 4.6 mm I.D. x 250 mm column Preparative separation by using 20 mm I.D. x 250 mm column
As mobile phase, highly soluble solvent for sample is suitable. Maximum injection volume 56 µl (28 mg) Maximum injection volume 1,050 µl (525 mg) (19 times higher than 4.6 mm I.D.)
Mobile phase: Ethyl Acetate : Hexane = 10 : 90
Flow rate: 4.6 mm I.D. : 1 ml/min
20 mm I.D. : 18.9 ml/min
Temperature: Room Temperature
Detection: UV 254 nm
Sample: 1.1-Naphthol
2.2-Naphthol

Ordering Information

Analytical (Particle size: 3 µm)
Product Cat.No. End-Fitting Quantity Price(US$)  
COSMOSIL 3SL-II Packed Column, 4.6 mm I.D. x 10 mm 38059-61 Waters type 1 pkg 310.00 Buy
COSMOSIL 3SL-II Packed Column, 4.6 mm I.D. x 50 mm 38060-21 Waters type 1 pkg 310.00 Buy
COSMOSIL 3SL-II Packed Column, 4.6 mm I.D. x 100 mm 38061-11 Waters type 1 pkg 400.00 Buy
Analytical (Particle size: 5 µm)
Product Cat.No. End-Fitting Quantity Price(US$)  
COSMOSIL 5SL-II Packed Column, 4.6 mm I.D. x 50 mm 37999-81 Waters type 1 pkg 310.00 Buy
COSMOSIL 5SL-II Packed Column, 4.6 mm I.D. x 100 mm 38000-01 Waters type 1 pkg 420.00 Buy
COSMOSIL 5SL-II Packed Column, 4.6 mm I.D. x 150 mm 38001-91 Waters type 1 pkg 380.00 Buy
COSMOSIL 5SL-II Packed Column, 4.6 mm I.D. x 250 mm 38002-81 Waters type 1 pkg 420.00 Buy
COSMOSIL 5SL-II Packed Column, 6.0 mm I.D. x 150 mm 38003-71 Waters type 1 pkg 480.00 Buy
COSMOSIL 5SL-II Packed Column, 6.0 mm I.D. x 250 mm 38004-61 Waters type 1 pkg 540.00 Buy
Guard Column (Particle size: 15 µm)
Product Cat.No. End-Fitting Quantity Price(US$)  
COSMOSIL 15SL-II Guard Column, 28 mm I.D. x 50 mm 05892-51 Waters type 1 pkg 1,560.00 Buy
COSMOSIL 15SL-II Guard Column, 50 mm I.D. x 50 mm 05894-31 Waters type 1 pkg 3,670.00 Buy
Guard Column (Particle size: 5 µm)
Product Cat.No. End-Fitting Quantity Price(US$)  
COSMOSIL 5SL-II Guard Column, 4.6 mm I.D. x 10 mm 37997-01 Waters type 1 pkg 190.00 Buy
COSMOSIL 5SL-II Guard Column, 10 mm I.D. x 20 mm 37998-91 Waters type 1 pkg 330.00 Buy
COSMOSIL 5SL-II Guard Column, 20 mm I.D. x 20 mm 05874-91 Waters type 1 pkg 720.00 Buy
COSMOSIL 5SL-II Guard Column, 20 mm I.D. x 50 mm 05875-81 Waters type 1 pkg 940.00 Buy
COSMOSIL 5SL-II Guard Column, 28 mm I.D. x 50 mm 34359-51 Waters type 1 pkg 1,700.00 Buy
Preparative (Particle size: 15 µm)
Product Cat.No. End-Fitting Quantity Price(US$)  
COSMOSIL 15SL-II Packed Column, 28 mm I.D. x 250 mm 05893-41 Waters type 1 pkg 2,790.00 Buy
COSMOSIL 15SL-II Packed Column, 50 mm I.D. x 250 mm 05895-21 Waters type 1 pkg 4,420.00 Buy
COSMOSIL 15SL-II Packed Column, 50 mm I.D. x 500 mm 05896-11 Waters type 1 pkg 6,640.00 Buy
Preparative (Particle size: 5 µm)
Product Cat.No. End-Fitting Quantity Price(US$)  
COSMOSIL 5SL-II Packed Column, 10 mm I.D. x 250 mm 38005-51 Waters type 1 pkg 860.00 Buy
COSMOSIL 5SL-II Packed Column, 20 mm I.D. x 250 mm 38006-41 Waters type 1 pkg 1,810.00 Buy
COSMOSIL 5SL-II Packed Column, 28 mm I.D. x 250 mm 34358-61 Waters type 1 pkg 3,620.00 Buy