500Pcs 100mm Glass Melting Point Capillary Tube 0.9-1.1mm One Close-end 10CM

Description

Product Overview

The Deschem 100mm glass capillary tube is a purpose‑built laboratory component designed for precise melting point determination and related analytical procedures. Constructed from high‑purity borosilicate glass, each tube offers excellent chemical resistance, thermal stability, and optical clarity, allowing scientists to observe sample behavior without interference. The tube features an inner diameter ranging from 0.9 mm to 1.1 mm, a dimension carefully selected to balance capillary action with sufficient sample volume for accurate measurement. One end of the tube is sealed, providing a reliable reference point and preventing sample loss during heating cycles.

Dimensions are standardized at 100 mm in length, a size that fits comfortably into most conventional melting point apparatuses while offering enough surface area for clear observation of the sample front. The packaging includes 500 individual tubes, each individually inspected for defects such as micro‑cracks, bubbles, or irregularities that could compromise performance. This bulk quantity ensures that laboratories, educational institutions, and research facilities can maintain a steady inventory without frequent reordering.

Usage

These capillary tubes are ideally suited for a wide range of applications, including organic synthesis, pharmaceutical development, polymer analysis, and quality‑control testing in industrial settings. The sealed end prevents evaporation of volatile compounds, making the tubes especially valuable when working with low‑boiling substances or thermally sensitive materials. Users typically fill the open end with a finely powdered sample, gently tap to settle the material, and then insert the tube into a calibrated melting point apparatus. The transparent glass allows real‑time visual monitoring of the sample as it transitions from solid to liquid, facilitating precise determination of melting points.

Beyond melting point determination, the tubes can serve as miniature reaction vessels for small‑scale thermal studies, such as decomposition temperature screening or kinetic experiments where a confined environment is required. Their robust construction tolerates rapid temperature changes, reducing the risk of breakage during sudden heating or cooling phases. The 0.9‑1.1 mm inner diameter provides a consistent capillary flow, ensuring reproducible results across multiple runs and operators.

Why Choose Us

Deschem is a recognized manufacturer of laboratory glassware, committed to delivering products that meet stringent quality standards. Each batch of capillary tubes undergoes a multi‑stage inspection process, including dimensional verification, visual defect screening, and pressure testing to confirm the integrity of the sealed end. This rigorous quality assurance protocol guarantees that every tube performs reliably under demanding laboratory conditions.

Our dedication to customer satisfaction extends beyond product delivery. We provide responsive technical support, detailed usage guidelines, and rapid assistance for any issues that may arise. Whether you are a seasoned researcher or a teaching laboratory coordinator, our team is ready to help you optimize the use of our capillary tubes for your specific analytical needs.

Key Features

• High‑purity borosilicate glass ensures chemical resistance and thermal stability.
• Precise 0.9‑1.1 mm inner diameter delivers consistent capillary action for accurate measurements.
• One sealed end prevents sample loss and protects volatile compounds during heating.
• 100 mm length fits standard melting point apparatuses while providing clear visual observation.
• Comprehensive after‑sales support and technical assistance for seamless laboratory integration.

FAQ

What is the recommended method for loading a sample into the tube?

Gently tap the open end of the tube to allow the powdered sample to settle evenly. Use a fine‑tipped spatula or a micro‑syringe to introduce the sample, ensuring the material does not exceed the tube’s inner diameter. Avoid over‑packing, as excess material can impede capillary flow and affect melting point accuracy.

Can the tubes be reused after a melting point determination?

Yes, the tubes can be cleaned with a suitable solvent (e.g., ethanol or acetone) and dried before reuse. However, repeated thermal cycling may gradually weaken the glass, so it is advisable to inspect the tube for micro‑cracks before each reuse. For critical applications, using a fresh tube is recommended.

Are the tubes compatible with all melting point apparatus brands?

The 100 mm length and standard diameter are designed to be compatible with most commercial melting point devices, including those from Fisher, Jasco, and Anton Paar. Always verify the specific holder dimensions of your equipment to ensure a snug fit.

What safety precautions should be taken when handling the glass tubes?

Handle the tubes with care to avoid impact or sudden temperature changes that could cause breakage. Wear appropriate personal protective equipment (PPE), such as safety goggles and gloves, especially when working with hot equipment. Dispose of broken glass according to your laboratory’s waste management protocols.

How does the sealed end improve the accuracy of melting point measurements?

The sealed end prevents evaporation of volatile components and eliminates the risk of sample leakage during heating. This containment ensures that the observed melting behavior reflects the true properties of the material, leading to more reliable and reproducible results.