high quality
Each column is rigorously tested

Full range of columns

Reliable technical support

Years of accumulated chromatographic analysis experience and technical team


High-quality stainless steel tubes, glass tubes and chromatographic packings for a variety of highly efficient packed columns



If you need to use stainless steel filter as the plug at both ends of the column, please specify when ordering.

If an on-column injection is used, there will be 6 CM of space at the front of the column inlet.

In order to prevent the elution of the chromatographic packing, both ends of the column are sealed with silanized glass wool.

If a valve injection or non-column injection column is used, the column inlet is filled

Glass column configuration for a wide range of gas chromatographs

2mm inner diameter glass column tube has a bevel at the entrance to facilitate injection

Each column is fully aging and rigorously evaluated

Precautions

Thank you for purchasing the column produced by Haohao.

Every column provided by Haohao is aging. To ensure the analytical separation you get, please aging for 1-2 hours before use. When aging, the carrier gas should be passed for about 10 minutes. After the air in the column is replaced, the temperature is raised to the high temperature of the Zui.

To avoid contamination of the detector, do not connect the column to the detector during aging.

When the oven temperature is higher than room temperature, a small amount of oxygen in the carrier gas will damage the stationary phase in the column. The carrier gas must be further deoxidized by a deoxidizing tube (it is recommended that the oxygen content of the carrier gas used should not exceed 1 ppm)

When installing the column, the product grade should be facing the operator and the left side is the column inlet (or see the label).

When disassembling the column, first lower the column temperature to room temperature and then turn off the carrier gas.

Introduction and installation of capillary column

1. Haojing Chromatography Each gas phase capillary column has undergone rigorous industry specification testing for column loss, sensitivity and efficiency, providing you with reliable qualitative and quantitative analysis results.

2. Provide peak shape and excellent signal to noise ratio.

3. Capillary columns have industry-leading technology, high inertness, low bleed levels and high inter-column reproducibility.

4. Capillary columns are tested according to strict industry standards according to requirements, and according to the requirements and practical applications, the production of capillary columns which can be washed by crosslinking and bonding can be solvent-resistant.

Capillary column installation:

1. Carefully check the column for damage.

2. Collect the necessary installation tools: column cutter, column nut, washer, magnifying glass, typewriter correction fluid.

3. Unscrew the column about 0.5 m from each end of the column to allow the inlet and detector to be installed.

4. Install the column in the oven. If possible, use a column hanger.

5. Install nuts and Vespel or graphite pads on both ends of the column. Pull the nut and washer down the column about 5 cm.

6. Cutting the column. Slightly draw about 4-5 cm from each end of the column.

7. Make sure that the tidy mouth is tidy. Catch the column with your thumb and forefinger, as close as possible to the scratch. Gently bend the column. The column should be broken easily. If the column cannot be broken, it cannot be forced. Cut the column again in different places and try to get a clean and tidy mouth.

8. Install the column at the inlet. Check the GC manufacturer's instrument manual for the correct installation interval. Use the typewriter correction fluid to mark the correct spacing on the column. Insert the column into the inlet. Tighten the column nut by hand until it begins to grip the column. Twist the 1/4-1/2 turn again so that the column does not come out when you gently pull it.

9. Make sure the carrier gas passes through the column. Check the bubble by placing the end of the column into the tong.

10. Load the column into the detector. Check the instrument manufacturer's instructions for the appropriate installation interval.

11. Check for leaks. This is very important. The column cannot be heated without leak detection.

12. Set the appropriate temperature for the inlet and detector.

13. Set the appropriate makeup gas and test gas flow. Ignition or turn on the detector.

14. Cold-blot the column for at least 10 minutes at room temperature (approximately 6 times the column volume).