Test Tube, Borosilicate Glass

GISCOM Test Tubes made from premium Borosilicate Glass 3.3 are essential laboratory vessels used for handling, heating, mixing, and observing reactions in chemical, biological, and analytical workflows. Designed to withstand high temperatures and chemical exposure, they ensure reliable performance in routine experiments and advanced research applications. Their dimensional accuracy and clarity make them indispensable across academic, industrial, and pharmaceutical laboratories.

Key Features

• Manufactured from high-quality Borosilicate Glass 3.3 for excellent thermal and chemical resistance
• Uniform wall thickness ensures durability and consistent heating
• High optical clarity for easy observation of samples and reactions
• Smooth, rounded rims for safe handling and reduced chipping
• Suitable for autoclaving, dry heat sterilisation, and repeated lab use
• Available with plain or rimmed mouth as per requirement
• Resistant to acids, alkalis, and most laboratory reagents
• Ideal for qualitative and quantitative experimental procedures

Material Specifications

• Material: Borosilicate Glass 3.3
• Thermal Properties: Low thermal expansion coefficient (~3.3 × 10⁻⁶/K), High thermal shock resistance. Suitable for heating, cooling, and flame operations
• Chemical Resistance: Excellent resistance to most chemicals, solvents, and corrosive agents. Non-reactive surface ensures sample purity
• Mechanical Properties: High hardness and scratch resistance. Robust mechanical stability for everyday laboratory handling
• Standards Compliance: Manufactured in accordance with international laboratory glassware standards (ISO / DIN).

Technical Specifications

• Available Sizes / Capacities: As per the standard size table
• Accuracy / Tolerance: Precision-formed dimensions with ± tolerances as per ISO glassware standards.
• Optional Accessories: Rubber or silicone stoppers, test tube racks (PP/HDPE) Brushes for cleaning

Handling & Precautions

• Handle with care to avoid impact or thermal shock
• When heating, apply heat evenly and avoid sudden temperature changes
• Ensure test tubes are completely dry before placing them over a flame or heating mantle
• Use proper tube holders or clamps during heating
• Autoclave at the recommended temperature and pressure for glassware sterilisation
• Clean immediately after use with mild detergents; avoid abrasive pads
• Do not expose to hydrofluoric acid or strong alkali at high temperatures
• Store upright in racks to prevent rolling and accidental breakage

Applications

• Chemical, biological, and analytical testing
• Sample collection, mixing, and heating
• Culture preparation in microbiology
• Qualitative reaction studies in chemistry
• Heating and boiling small liquid volumes
• Used in R&D labs, pharma QC/QA labs, universities, food testing labs, clinical laboratories, petrochemical units, and biotech research
• Essential in daily lab workflows for routine tests and controlled experimental setups