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. Science Lab Supplies, working out of Ambala, India, offers the set to school and college chemistry labs and quotes distributors and tender contractors by quantity.
Specifications
Here every dimension of the Z-tube collection set is tabulated. In short, an 18 mm diameter test tube 150 mm long is closed by a rubber stopper with a single hole, through which passes a 6 mm outer-diameter glass tube bent into a Z, so the outlet points upward under water, ready for an inverted tube.
| Specification | Value |
|---|---|
| SKU | SCL-CL-11459 |
| Collection method | Over water (displacement of water) |
| Test tube diameter | 18 mm |
| Test tube length | 150 mm |
| Delivery tube material | Glass |
| Delivery tube outer diameter | 6 mm |
| Delivery tube shape | Z-shaped |
| 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 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, with the reaction tube clamped on a Laboratory Stand.
- Class 11 chemistry: laboratory preparation and collection of oxygen and hydrogen, using a 180 mm glass Crystallizers dish as the water trough.
- Middle-school science: showing that a gas can be collected by pushing water out of an inverted tube.
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 included; they, and spare Rubber Stoppers of Various Diameters with Holes, can be requested separately.
Packing, MOQ and Lead Time
The set can be quoted in any number, from one to enough for a class. Send the quantity and Science Lab Supplies 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. Quotations start from a quick note on the contact page or a basket in the enquiry cart; schools buying under a tender can see the lab tender page too.
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 without spilling.
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?
Schools, colleges and institutes can order it from Science Lab Supplies, an Ambala, India supplier that also prepares bulk quotations for distributors and tender contractors.
Related Gas Collection Sets
These Chemistry Lab items complete the other collection methods and the tests that follow: test-tube sets for collecting by displacement of air, a gas generator, a gas preparation kit, collecting tubes, a small trough and splints for testing oxygen. All can share one quotation.
- Simple Appliances for Cooking Gases Heavier than Air — 18 x 150 mm tube fitted with an N-shaped 6 mm glass tube.
- Simple Appliances for Cooking Gas Lighter than Air — same tube size with a straight 6 mm glass tube.
- Simple Devices for Studying the Properties of Substances — test tube with an L-shaped 6 mm outlet.
- Kipps Apparatus — produces gases such as hydrogen from granular zinc and acid without heating.
- Simple Gas Preparation Kit — side-arm test tube, gas chimney shelf and a tank whose lid makes a storage box.
- Test Piece — rimless 18 x 180 mm glass test tube.
- Crystallizer — clear glass dish, 90 mm across and 40 mm high.
- Wood Splints — glowing splints for testing oxygen or lighting burners.
Browse the full Chemistry Lab range, the Lab Glassware range, or all school lab equipment.
Last updated: 9 October 2026
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