Gas Absorption Column
Product Code : LSK-TWL-10807
Gas Absorption Column (SKU LSK-TWL-10807) is a floor-standing mass transfer unit in which oxygen from rising air is absorbed into a falling water film in a glass wetted wall column. Deoxygenated feed water and inlet and outlet oxygen probes let students measure the transfer directly. It serves chemical engineering mass transfer labs. Science Lab Supplies manufactures it at its factory at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and supplies it direct to colleges, tender contractors and distributors.
Specifications
The gas absorption column is specified row by row in the table below. In short, a painted steel frame carries a gimbal-mounted glass wetted wall column beside a deoxygenating column, with base pumps, an integral diaphragm air pump and a console holding flow meters, pump controls and an oxygen analyser.
| Specification | Value |
|---|---|
| SKU | LSK-TWL-10807 |
| Frame | Floor-standing painted steel framework |
| Working medium | Water |
| Water storage | Tank at the rear of the unit; water recycled to the deoxygenator |
| Absorption column | Glass wetted wall column with water inlet and outlet sections |
| Column mounting | Gimbal mounted for accurate vertical setting |
| Deoxygenating column | Similar overall size, standing vertically beside the absorption column |
| Deoxygenation | Water sparged with nitrogen |
| Air supply | Integral diaphragm-type air pump into the column base |
| Water pumps | At the base, feeding the deoxygenator and the absorption column |
| Oxygen probes | Two housings, for water entering and leaving the column |
| Console | Flow meters, pump controls and oxygen analyser |
| Hydraulic study | Air pressure differential versus air flow at different water flow rates; flooding point |
| Additional study | CO2 absorption from an air-CO2 mixture into caustic soda solution |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Gas Absorption Column
The unit is used to measure gas-liquid mass transfer: dissolved oxygen is read in rapid succession at the column inlet and outlet while air and water flows are varied. Repeat runs at several water flow rates show how liquid flow affects oxygen transfer.
- B.Tech/B.E. chemical engineering mass transfer: oxygen absorption in a wetted wall column, compared with the Absorption in Packed Column.
- Mass transfer coefficients from inlet and outlet dissolved oxygen readings.
- Effect of water flow rate on the liquid-side mass transfer coefficient.
- Oxygen uptake at different air flow rates, with water flow held steady.
- Air pressure differential across the column against air flow at several water flow rates, noting the flooding point.
- Absorption of carbon dioxide from an air-CO2 mixture into caustic soda solution, tracked with a Bench Digital pH Meter; caustic soda is corrosive, so handle it under supervision.
Standard Scope of Supply
Each unit comprises the wetted wall column, the deoxygenating column, the water storage tank and pumps, the diaphragm air pump, the two oxygen probe housings and the console with flow meters, pump controls and oxygen analyser, all on the steel frame. Nitrogen for the deoxygenator is not listed.
Packing, MOQ and Lead Time
Quotations cover one unit or a full mass transfer lab, and each Science Lab Supplies quotation sets out the packing, delivery time and price for the quantity requested. Colleges comparing engineering lab equipment manufacturers in India can add other separation trainers to the same quotation.
As a registered exporter with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Uganda, the UAE, Saudi Arabia, Oman, the Philippines and Nepal. Use the contact page or the enquiry cart to enquire; the lab tender page covers tender supply.
Frequently Asked Questions
How does the Gas Absorption Column measure absorption?
Water is first stripped of oxygen with nitrogen, then flows down the wetted wall while air rises. Probes read dissolved oxygen in the water entering and leaving the column, giving the amount absorbed.
Is nitrogen supplied with the unit?
No. Nitrogen for sparging the feed water is not in the scope of supply; the laboratory arranges its own nitrogen supply and handles gas cylinders under supervision.
Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies is the manufacturer. The unit is built at its own factory in Saha, Ambala, India, and quotations come directly from the factory.
Why is the column gimbal mounted?
A wetted wall column must stand exactly vertical for an even liquid film. The gimbal mounting lets the column be set accurately vertical before each run.
Related Mass Transfer and Separation Trainers
These trainers complete a mass transfer and separation lab around the wetted wall column. They add packed-column absorption, packed-bed and fluidised bed flow, extraction, evaporation, aerated biological treatment and flow measurement, covering the main gas-liquid and fluid topics in a chemical engineering course.
- Absorption in Packed Column — glass packed column for gas absorption, pressure drop, humidification and stripping studies.
- RTD Studies in Packed Bed — glass column packed with Raschig rings, with rotameter and tracer injection.
- Fluidisation and Fluid Bed Heat Transfer Unit — air flow and pressure drop through fixed and fluidised beds in a glass chamber.
- Solid Liquid Extraction Unit — semi-batch extraction with heating bath, condenser and reflux divider.
- Rising Film Evaporator — vertical shell and tube evaporator working on the thermo-siphon principle.
- Aerobic Digester — 10-litre aerated reactor with air compressor and dissolved oxygen meter.
- Flow Meter Calibration — nozzle flow meter with four water-filled manometers.
Browse the full Training Workshop Labs range, the Fluid Mechanics range for flow and pressure apparatus, or all TVET lab equipment.
Last updated: 9 October 2026
.jpg)