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Test Tubes (With Rim)
Test Tubes (With Rim) (Product Code: SCL239/038) are clear borosilicate glass tubes used to hold, mix and heat small volumes of liquid in school and college biology labs. Measuring 15 x 125 mm with a rim around the mouth, they are heat and chemical resistant, so students can warm them over a flame and use them with food-test reagents. These tubes belong to the borosilicate laboratory glassware made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Size | 15 x 125 mm |
| Material | Borosilicate glass |
| Mouth | With rim |
| Colour | Clear |
| Heat resistance | Heat resistant |
| Chemical resistance | Chemical resistant |
| Product code | SCL239/038 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Test Tube with Rim Used For?
In the biology lab these tubes carry out the classic tests for food components: the iodine test for starch, the biuret test for protein and the Benedict solution test for reducing sugars, which needs the tube to be heated. They are also used to follow the action of salivary amylase on starch at different temperatures, to compare the pH of samples with indicator, and to hold germinating seeds or small cultures for observation. The clear glass lets students see colour changes and precipitates from every side.
When heating, fill the tube no more than one-third full, grip it near the top with a test tube holder, keep it moving at a slant in the flame and point the mouth away from everyone. The rim gives the holder a firmer edge to sit below and helps liquid pour cleanly. Allow hot tubes to cool in a rack rather than plunging them into cold water, a simple habit that keeps school biology lab equipment in service for longer.
OEM Manufacturer
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, the OEM (original equipment manufacturer) behind these rimmed test tubes. The company produces its laboratory glassware at its own licensed factory at Saha, Ambala, Haryana, India, and sells factory-direct to schools, colleges, dealers and importers instead of reselling another maker's stock. When a lab needs to replace breakages from an earlier order, ask us and the manufacturer itself arranges the repeat supply. Read more on our company profile.
Related Laboratory Equipment
Items that complete a test-tube workstation for food and enzyme tests:
- Test Tube Holder — holds the tube safely while it is heated over a flame.
- Test Tube Racks — keeps a row of tubes upright during a set of comparative tests.
- Brush Test Tube — scrubs out residues after each practical.
- Benedicts Reagent (Test Of Glucose) — the reagent heated in these tubes to detect reducing sugars.
- Spirit Lamp — a simple heat source for warming tubes where gas is not available.
Browse the full Biology Lab range for reagents, stains and glassware.
Frequently Asked Questions
What size are the Test Tubes (With Rim)?
The Test Tubes (With Rim) measure 15 x 125 mm, written in the usual diameter-by-length form. This size suits small-volume food tests and enzyme practicals where each student group runs several tubes side by side in a rack.
Can these test tubes be heated directly in a flame?
Yes, these borosilicate test tubes are heat resistant and can be warmed directly in a flame. Heat gradually, keep the tube moving, never heat an empty tube strongly, and avoid sudden cooling, which can crack any glass.
Why choose a test tube with a rim?
A test tube with a rim has a strengthened mouth and pours more neatly than a plain edge. Rimless tubes are usually chosen only where a stopper or cap must sit flush, so rimmed tubes suit most general heating and reagent work.
How many test tubes come in a pack?
Pack quantity for these test tubes is not given in our current listing. Tell us the number of tubes you need on the contact page and we will quote packing that suits a class set, a lab restock or a distributor order.
How should the test tubes be cleaned?
Rinse the test tubes soon after use, scrub them with a test tube brush and detergent, rinse with tap water and then distilled water, and dry them upside down in a rack so that no residue affects the next colour test.
Who manufactures the Test Tubes (With Rim) SCL239/038?
Jain Scientific Equipments Pvt Ltd (ScienceLab) manufactures the Test Tubes (With Rim) as the OEM at its own factory in Ambala, Haryana, India. Buyers receive their quotation and supply straight from the manufacturer rather than through a trading intermediary.
Do you handle bulk and export orders for these test tubes?
Yes, the test tubes are quoted in bulk for schools, colleges, distributors and tender buyers across India and international markets. Share the code SCL239/038, the quantity and the delivery destination, and we will reply with packing and dispatch details.
Request a Quote
For prices and delivery, send code SCL239/038 with your quantity through our contact page, or place the tubes in the enquiry cart along with racks and holders. Your quotation comes direct from the manufacturer that produces the glassware.
Last updated: 24 September 2026
