Neminath Instruments Neminath Instruments

Neminath Instruments

Test Tubes

Durable glass test tubes for lab experiments. Heat-resistant, chemical-safe, and ideal for mixing, heating, and storing small liquid samples securely.

Test Tubes

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

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