Reusable Graduated Test Tubes :

Accuracy and reliability are paramount in any laboratory. Our borosilicate glass test tubes are meticulously designed to meet the highest standards of precision and durability. Designed for professionals who demand clarity and consistency, these tubes feature permanently etched, acid-resistant graduations that ensure accurate and clear measurements even after repeated use, sterilization, and contact with chemicals.

Feature Of Test Tube

● Premium Borosilicate Glass: Excellent resistance to thermal shock, chemical inertness, and long-term durability, suitable for reusable applications.

● Permanent Laser-Etched Gradients: Unlike faded printed markings, our graduations are etched for lasting clarity and resistance to the abrasion of cleaning and autoclaving.

● Secure Sealing with Round-Tip Stoppers (Model 1238): Ground-in glass stoppers provide excellent sealing, preventing evaporation and contamination of sensitive samples.

● Optimal Size: Each tube is designed with standardized outer diameter (O.D.) and length specifications, ensuring stability on test tube racks and in flames. These graduated tubes are indispensable in numerous fields.

Specification Of Test Tubes

Application Of Test Tube With Graduations

● Chemical Analysis: Used for precise reagent measurement, small-scale reactions, and titrations.

● Educational Laboratories: Teaching students fundamental techniques in chemistry and biology.

● Life Sciences: Sample collection, culture observation, and biochemical analysis.

● Industrial Quality Control: Quality control testing and product development in the pharmaceutical, cosmetic, and food science fields.

Why Choose Jiangsu Huida Test Tubes?

Choosing Jiangsu Huida means investing in trust and superior performance. We specialize in laboratory glassware, combining decades of manufacturing experience with rigorous quality control. Our reusable graduated test tubes with round stoppers are not just products, but reliable tools that improve workflow efficiency and data integrity. We are committed to providing consistent quality, competitive pricing, and robust packaging, ensuring safe delivery worldwide, and are a strategic partner for laboratories globally.

Frequently Asked Questions (FAQ)

1. Can these borosilicate glass test tubes be autoclaved?

Yes, absolutely. These glass stoppers are made of high-quality borosilicate glass 3.3 and are designed to withstand repeated autoclaving (typically up to 121°C) and direct flame heating without affecting the integrity of the glass or the etched graduations.

2. What are the advantages of ground-in glass stoppers (round-tipped stoppers)?

Ground-in glass stoppers provide a customized hermetically sealed solution for specific test tubes. This prevents the evaporation of volatile liquids, protects samples from atmospheric contamination, and is crucial for reactions involving gases or sensitive reagents.

3. How to clean the graduations to maintain their clarity?

Etched graduations are very durable. When cleaning, use standard laboratory cleaners or a mild acid solution to remove stubborn residues. Avoid wiping the graduation area directly with an abrasive scouring pad. The graduations are permanently etched into the glass and cannot be washed away.