Simple Equipment for Gases that do not Dissolve in Water
Product Code : SCL-CL-11459
Simple Equipment for Gases that do not Dissolve in Water (SKU SCL-CL-11459) lets students generate a small amount of gas in a stoppered test tube and collect it over water. A Z-shaped 6 mm glass tube carries the gas from the reaction tube down into a water trough and up into an inverted collecting tube. For school and college chemistry labs, distributors and tender contractors, Science Lab Supplies supplies this equipment from Ambala, India.
Specifications
This set pairs an 18 mm diameter test tube, 150 mm long, with a rubber stopper that has a single hole. Through the stopper passes a glass tube of 6 mm outer diameter bent into a Z shape, so the outlet points upward under water, ready for an inverted tube.
| Parameter | Value |
|---|---|
| SKU | SCL-CL-11459 |
| Collection method | Over water (downward displacement of water) |
| Test tube | Diameter 18 mm, length 150 mm |
| Delivery tube | Z-shaped glass tube, 6 mm outer diameter |
| Stopper | Rubber, one hole |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for Gases that do not Dissolve in Water
Gases that dissolve only slightly in water, such as oxygen and hydrogen, are collected by bubbling them into a water-filled tube held upside down. The gas pushes the water out, giving a pure sample for tests like the glowing splint for oxygen or the pop test for hydrogen.
- NCERT Class 10 science: preparing hydrogen from a metal and dilute acid and testing it.
- Class 11 chemistry: laboratory preparation and collection of oxygen and hydrogen.
- Middle-school science: showing that air-like gases can be collected over water.
If the reaction tube is heated, remove the delivery tube from the water before removing the heat, so cold water cannot suck back and crack the hot glass. Hydrogen is flammable; test only small amounts.
Standard Scope of Supply
The set consists of an 18 x 150 mm test tube, a rubber stopper with a hole, and a Z-shaped 6 mm glass delivery tube. A trough, collecting tubes and chemicals are not in the listing and can be requested separately.
Packing, MOQ and Lead Time
This set is often bought in numbers to match a class. Send the quantity and we will return a quotation with packing, delivery time and price. For a full chemistry lab equipment order, spare stoppers and glass tubing can be quoted together.
Science Lab Supplies is registered as an exporter and holds an Importer-Exporter Code, so it can ship to buyers in Peru, Egypt, Iraq, Nigeria, Kenya and Ghana. Please enquire via the contact page, save items in the enquiry cart, or refer to the lab tender page for tender purchases.
Frequently Asked Questions
Why is the delivery tube Z-shaped?
The two bends take the tube out of the reaction tube, down below the water surface and back up, so the gas can rise straight into an inverted collecting tube.
Which gases can be collected with this set?
It suits gases that do not dissolve much in water, such as oxygen and hydrogen. Very soluble gases like ammonia or hydrogen chloride need a different collection method.
Who supplies the Simple Equipment for Gases that do not Dissolve in Water?
Science Lab Supplies supplies it from Ambala, India to schools, colleges and institutes, with bulk quotations for distributors and tender contractors.
Related Gas Collection Sets
Gas preparation lessons usually cover three collection methods. These four items from the Chemistry Lab range complete them: two test-tube sets for collecting by displacement of air, a basic set for testing evolved gases, and a Kipp's generator for larger volumes. All can share one quotation.
- Simple Appliances for Cooking Gases Heavier than Air — collecting dense gases by upward displacement of air.
- Simple Appliances for Cooking Gas Lighter than Air — collecting light gases by downward displacement of air.
- Simple Devices for Studying the Properties of Substances — L-tube set for testing evolved gases.
- Kipps Apparatus — gas generator for class demonstrations.
Browse the full Chemistry Lab range or all school lab equipment.
Last updated: 25 September 2026
