Application
Glass test tubes are used for:
- Heating, mixing, and holding small quantities of liquids or samples
- Chemical reactions and qualitative analysis
- Sample collection in dairy, chemical, petroleum, pharmaceutical, and educational laboratories
- Water, milk, and chemical testing procedures
Compliance Standard
- ISO 4142 – Laboratory glassware, test tubes
- ASTM E982 – Standard specification for glass test tubes
- DIN standards for Borosilicate Glass 3.3
Product Description
Test tubes are manufactured from high-quality Borosilicate Glass 3.3, offering excellent resistance to heat, chemicals, and thermal shock. They are available with round bottom or flat bottom options and feature uniform wall thickness for safe heating.
The rim is fire-polished for smooth handling. Suitable for direct heating over flame or on a hot plate.
Technical Specifications
|
Parameter |
Specification |
|
Material |
Borosilicate Glass 3.3 |
|
Bottom Type |
Round bottom / Flat bottom |
|
Rim |
Fire polished |
|
Thermal Resistance |
High |
|
Chemical Resistance |
Excellent |
|
Transparency |
Clear, high visibility |
|
Autoclavable |
Yes |
|
Wall Thickness |
Uniform for safe heating |
Apparatus is Supplied
- Test tubes (as per selected size)
Common Sizes Available:
12×75 mm, 15×100 mm, 18×150 mm, 25×150 mm
Optional Accessories
- Test tube stand
- Test tube holder (wooden/metal)
- Test tube brush
- Rubber stopper / cork
- Boiling chips
Dimensions & Weight (Approx.)
|
Size (Dia × Length) |
Capacity (Approx.) |
Weight |
|
12 × 75 mm |
5 ml |
8 g |
|
15 × 100 mm |
10 ml |
15 g |
|
18 × 150 mm |
25 ml |
28 g |
|
25 × 150 mm |
50 ml |
45 g |