100% Dimethicone DB1 Wall Coated Open Tubular Column
Application Area:
- Alcohols, aromatics, amines
- Drugs of Abuse, flavours, fatty acids
- Halogenated hydrocarbons, hydrocarbons
- PAHs, Phthalates (EPA Method 606)
- Natural Gas
- Cyclic Hydrocarbons
- Pesticides, solvents
| Inner diameter/mm |
Column length/m |
Film thickness/um |
| 0.25 |
15 |
0.10 |
| 0.25 |
| 0.50 |
| 1.00 |
| 30 |
0.10 |
| 0.25 |
| 0.50 |
| 1.00 |
| 50 |
0.10 |
| 0.25 |
| 0.50 |
| 1.00 |
| 60 |
0.25 |
| 0.50 |
| 1.00 |
| 0.32 |
15 |
0.25 |
| 0.50 |
| 1.00 |
| 30 |
0.10 |
| 0.25 |
| 0.50 |
| 1.00 |
| 50 |
0.25 |
| 0.50 |
| 1.00 |
| 60 |
0.25 |
| 0.50 |
| 1.00 |
How to choose a right capillary column?
1. Column length
The resolution is proportional to the square root of the column length. Under other conditions unchanged, 4 times the column length is required to obtain doubled resolution. Shorter columns are suitable for simpler samples, especially those composed of components that differ greatly in structure, polarity, and volatility.
15m short column is used to quickly separate simpler samples and is also suitable for scanning analysis;
30m chromatographic column is the commonly used column length, most of the analysis is done on this length of the column;
50m/60m or longer chromatographic columns are used to separate more complex samples.
2. Column inner diameter
The inner diameter of the column directly affects the efficiency, retention characteristics and sample capacity of the column. Small-bore columns have higher efficiency than large-bore columns, but the column capacity is smaller
0.25mm: Has higher column efficiency and lower column capacity. It is better to separate complex samples.
0.32mm: The column efficiency is slightly lower than 0.25mm, but the column capacity is about 60% higher.
0.53mm: It has a column capacity similar to a packed column and can be used for split injection or splitless injection.
When performing trace analysis, a large-bore capillary column is more appropriate.
3. Liquid film thickness
The thickness of the liquid film affects the retention characteristics and capacity of the column. As the thickness increases, the retention time also increases.
0.1-0.2um: The thin liquid film capillary column elutes components faster than the thick liquid film capillary column, the required column temperature is lower, and the column loss is smaller at high temperature, which is suitable for the analysis of high boiling point compounds.
0.25-0.5um: commonly used liquid film thickness.
0.6-5.0urn: thick liquid film, which is more advantageous for the analysis of low boiling point compounds.
No accident shipping term:
DHL: 5-7 working days;
UPS: 7-9 working days;
FedEx: 7-9 working days;
EMS: 25-30 working days;
China Post: Depends on ship to which country;
Sea: Depends on ship to which country
Q1: Are you trading company or manufacturer ?
A: We are manufacturer and do both OEM and ODM. We have our own R&D team.
Q2: How to order?
A: Send inquiries → Reply you quotations → Discuss details → Confirm samples →
Deposit → Mass production → Cargo ready → Balance/Delivery → More cooperations.
Q3: What is your payment method ?
A: We accept T/T, Western Union, Paypal and MoneyGram, those depend on specific cases.
Q4: How long is your delivery time?
A: Usually 1-3 working days for products in stock. If we do special offer, it usually takes
4-6 weeks. Also delivery time is according to your quantity of order.
Q5: How to transport?
A: DHL, UPS, FedEx, TNT, EMS, China Post and Sea are available.Also other shipping ways are
available. Please feel free to contact us for other shipping ways.
Q6: How is your warranty service?
A: We do strict test before shipping and guarantee for 365 days. If quality problem you
could send us pictures or video clips about problem. Then we deal with the problem ASAP.
100% Dimethicone DB1 Wall Coated Open Tubular Column
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