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5000mL 24/40 Three-Neck Glass Cylinder Reactor NANSHIN 5L Flask

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1000ml Schlenk Reaction Flask ADAMAS BETA with Stopcock 24/40 Joint

Original price was: $99.00.Current price is: $95.04.
1000ml Schlenk Reaction Flask ADAMAS BETA with Stopcock 24/40 Joint-0

Laboy 25mL Schlenk Flask – Pear‑Shaped with 14/20 Joint, Stopcock

Original price was: $99.00.Current price is: $96.03.

The Laboy 25mL Schlenk Flask offers a compact pear‑shaped design ideal for micro‑scale air‑free reactions. Crafted from high‑quality borosilicate glass, it features a 14/20 joint and a glass stopcock for precise vacuum and inert gas handling, making it perfect for Grignard, organometallic and screening experiments in academic and industrial labs. Autoclavable and shipped with protective foam packaging for safe delivery.

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SKU: CJQEVOB01AR2 Category:
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Description

Product Overview

The Laboy 25mL Schlenk Flask is a precision‑engineered laboratory vessel designed for the most demanding air‑free and inert‑gas chemistry applications. Constructed from high‑temperature borosilicate glass, the flask provides exceptional chemical resistance, thermal stability, and optical clarity, allowing researchers to monitor reactions visually without compromising safety. Its distinctive pear‑shaped profile maximizes mixing efficiency while minimizing dead volume, a critical factor when working with limited reagent quantities. The flask incorporates a 14/20 ground‑glass joint, a standard size that seamlessly connects to condensers, adapters, rotary evaporators, and vacuum lines, ensuring a leak‑free seal across a wide range of experimental setups. A finely machined glass stopcock is integrated into the neck, offering precise control over vacuum and gas flow, making it ideal for Schlenk line techniques, Grignard reactions, and organometallic syntheses. The 25 mL capacity strikes a balance between scalability and material economy, enabling microscale screening, teaching demonstrations, and pilot‑scale synthesis without excessive waste. Each unit is individually handcrafted, inspected for glass integrity, and packaged in foam‑lined containers to protect against impact during shipping.

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Usage

This flask excels in environments where inert atmosphere control is paramount. In academic teaching labs, it serves as a reliable tool for introducing students to Schlenk line techniques, allowing them to practice vacuum transfers, gas purging, and moisture‑sensitive reactions safely. In industrial research settings, the flask supports high‑precision organometallic experiments, such as the preparation of Grignard reagents, lithium organics, and transition‑metal complexes, where even trace amounts of oxygen or water can jeopardize product yield. The compact 14/20 joint enables quick attachment to standard condensers for reflux operations, while the glass stopcock facilitates fine‑tuned vacuum adjustments during distillations or solvent removal. Its autoclavable nature permits routine sterilization, making it suitable for pharmaceutical development where sterility and reproducibility are essential. The flask’s thermal conductivity ensures uniform temperature distribution during heating or cooling, reducing hot spots that could lead to side reactions. Whether employed in a glove box, a fume hood, or a standard bench‑top setup, the Laboy Schlenk Flask delivers consistent performance across a spectrum of chemical disciplines.

Why Choose Us

Choosing Laboy means selecting a brand committed to laboratory excellence and scientific integrity. Our flasks are manufactured under strict quality‑control protocols that exceed industry standards, guaranteeing uniform wall thickness, flawless ground‑glass joints, and bubble‑free glass. Each flask undergoes rigorous pressure testing to confirm its ability to withstand vacuum cycles without cracking, providing confidence during demanding procedures. The handcrafted nature of our glassware ensures that every piece receives individual attention, resulting in superior craftsmanship that mass‑produced alternatives often lack. Laboy’s dedication to customer support includes a responsive technical assistance team ready to answer queries about proper usage, maintenance, and compatibility with ancillary equipment. We also offer a straightforward replacement policy for any product that arrives damaged despite our protective packaging, underscoring our commitment to a risk‑free purchasing experience. By integrating Laboy’s Schlenk Flask into your workflow, you benefit from a reliable, durable, and scientifically validated tool that enhances experimental reproducibility and safety.

Key Features

  • Pear‑shaped borosilicate design provides superior mixing and thermal control for microscale reactions.
  • 14/20 ground‑glass joint ensures leak‑free connections with standard condensers, adapters, and vacuum lines.
  • Precision glass stopcock allows fine regulation of vacuum and inert gas flow, essential for Schlenk line techniques.
  • Autoclavable construction meets sterility requirements for pharmaceutical and biotech applications.
  • Dedicated customer support and hassle‑free replacement policy for damaged items.

FAQ

What types of reactions are best suited for this 25 mL Schlenk flask?

The flask is ideal for air‑sensitive reactions such as Grignard reagent preparation, organolithium chemistry, transition‑metal catalysis, and moisture‑sensitive condensations. Its small volume makes it perfect for screening multiple conditions while conserving valuable reagents.

Can the flask be used with a standard rotary evaporator?

Yes. The 14/20 joint matches the common size of rotary evaporator condensers, allowing direct attachment for solvent removal under reduced pressure. The glass stopcock provides additional control for gradual pressure changes.

Is the flask compatible with high‑temperature reflux operations?

Absolutely. Borosilicate glass tolerates temperatures up to 350 °C, making the flask suitable for reflux, distillation, and heating cycles required in many organic syntheses.

How should the flask be cleaned after use?

Rinse the flask with appropriate solvents to remove residues, then place it in an autoclave for sterilization if needed. For stubborn deposits, a gentle soak in a dilute acid solution followed by thorough rinsing is recommended.

What is the warranty or return policy for this product?

Laboy offers a one‑year limited warranty covering manufacturing defects. If the flask arrives damaged despite our foam‑lined packaging, contact our support team for a replacement or refund within 30 days of receipt.

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