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In modern laboratories and chemical production facilities, glass heat exchangers, also known as glass condensers, are critical components for controlling temperature and recovering solvents in various reactions.   Made from high-quality borosilicate glass, these condensers offer excellent chemical resistance, thermal stability, and visibility, making them ideal for distillation, reflux, condensation, and solvent recovery processes. Their transparent structure allows operators to observe fluid flow and condensation directly, improving process control and safety.   There are several types of glass condensers, including coil condensers, straight-tube condensers, and spiral condensers, each suited for different cooling capacities and flow rates. They are commonly used with glass reactors, rotary evaporators, and distillation columns in the fields of pharmaceutical development, chemical synthesis, essential oil extraction, and academic research.   Compared to metal heat exchangers, glass heat exchangers are non-reactive and particularly suitable for sensitive compounds. With proper cleaning and maintenance, a glass heat exchanger can serve reliably for years without contamination or corrosion.   If you're looking for an efficient, corrosion-resistant, and visually accessible solution for thermal exchange, glass heat exchangers are a smart choice for your lab or production line.    

Looking for a reliable, corrosion-resistant, and easy-to-operate container for precise liquid addition in your lab processes? Meet our Borosilicate Glass Dropping Funnel, also known as a High-Level Tank or Spherical Dropping Bottle—designed for seamless integration into your chemical workflows. Key Features: Excellent Chemical Resistance: Suitable for strongly corrosive liquids such as acids and alkalis, thanks to the high chemical durability of borosilicate glass. Transparent & Visible: Allows clear observation of fluid levels and flow, reducing dosing errors during titration or controlled addition reactions. Simple Installation & Operation: Compact structure, easy to mount and connect to other glassware or reaction systems. Cost-Efficient & Easy to Maintain: Reusable after cleaning, with low replacement and maintenance costs. Heat Resistant & Pressure Stable: Withstands thermal shocks and slight vacuum/pressure variations during reactions. Original Manufacturer Supply: Produced and shipped directly from Hefei YangMai — your reliable supplier of laboratory-grade borosilicate glassware. Whether used for controlled reagent addition, continuous dripping, or gravity-fed transfers, our glass dropping tanks are trusted tools in pharmaceutical labs, chemical research, and production environments.   Your Trusted Labware Partner — YangMai Borosilicate Glass Expert

When working in chemical, pharmaceutical, or biological research, light-sensitive reactions require specialized equipment to maintain sample integrity. One such solution is the 20L Brown Glass Reactor, designed specifically to protect light-sensitive compounds from degradation. What Is a 20L Brown Glass Reactor? A 20L Brown Glass Reactor is a type of single or double-layer reaction vessel made from high borosilicate glass, featuring a brown inner layer. This brown (amber) coating effectively blocks UV and visible light, helping to prevent photochemical reactions that could compromise your experiment's outcome. Why Brown Glass? The Brown Glass Vessel acts as a natural shield against harmful rays. Similar to amber medicine bottles, it ensures maximum light protection, especially during long-duration or temperature-sensitive reactions. Key Advantages Light Protection: The brown inner layer blocks UV/blue light that may alter chemical compositions. High Chemical Resistance: Made from durable borosilicate glass, suitable for acids, bases, and solvents. Thermal Stability: Withstands rapid temperature changes, ideal for heating/cooling cycles. Easy Observation: Despite the tint, the reactor remains semi-transparent for visual monitoring. Applications The 20L Brown Glass Reactor is ideal for: Photolabile compound synthesis Botanical extraction Pharmaceutical intermediate production Material development under light-restricted conditions Final Thoughts   If your lab deals with light-sensitive materials, upgrading to a Brown Glass Reactor can significantly improve reproducibility and safety. Our 20L model balances capacity, light shielding, and chemical compatibility—making it a smart investment for any serious lab.

In high-demand laboratory environments where chemical resistance and thermal stability are essential, equipment quality becomes a key factor in ensuring safety and precision. Today, we are excited to introduce one of our premium innovations: the 50L PTFE-coated double-layer glass reactor, designed for researchers and industrial chemists who require enhanced durability and performance. Why PTFE Coating Matters Unlike standard glass reactors, this model features an exterior coating of PTFE (Polytetrafluoroethylene) — a highly inert and corrosion-resistant material. This added protection makes the system ideal for handling strong acids, bases, and reactive organic compounds, especially in experiments involving Grignard reactions, esterification, or complex synthesis procedures. The PTFE surface also offers excellent non-stick properties, reducing residue build-up and making cleaning significantly easier. Key Features 50L Working Volume: Suitable for pilot-scale or intermediate-scale chemical processing. Double-Layer Jacket Design: Supports controlled temperature cycling using thermal fluids. Stainless Steel Agitator Shaft: Delivers efficient and stable mixing, even with viscous media. Wide Chemical Compatibility: Ideal for use in pharmaceuticals, petrochemicals, and new materials research. Application Scenarios Whether used for distillation, crystallization, reaction control, or reflux processing, this reactor provides consistent thermal distribution and outstanding visibility of the reaction process. The vacuum-tight system ensures low-loss, high-purity synthesis, suitable for labs focused on API synthesis, resin production, or solvent recovery.

To ensure the accuracy of chemical reactions and prolong the service life of your equipment, regular cleaning of glass reactors is essential. Especially after handling solvents, acids, or high-viscosity substances, proper cleaning helps prevent cross-contamination, build-up, and performance degradation. Cleaning Procedure: Drain Residual Liquids: Make sure the power is off. Discharge any remaining solution from the reactor. Warm Water Rinse: Rinse the inner wall with warm water to loosen any residue. Use Mild Detergents: Choose a neutral or weak alkaline glassware cleaner based on the substances used. Avoid strong corrosive agents. Brush & Rinse Thoroughly: Gently brush the interior and rinse with deionized or purified water at least three times. Dry Completely: Use filtered air or nitrogen to dry the reactor chamber to prevent water spots or contamination. For sticky or colored organic compounds, consider using ethanol or acetone combined with ultrasonic cleaning for optimal results. Hefei Yangmai specializes in high-quality glass reactors and provides complete support for maintenance and operation. Feel free to contact us for further technical assistance.  

We are excited to announce the launch of our PTFE Diaphragm Vacuum Pump, engineered with premium Polytetrafluoroethylene (PTFE) materials for excellent chemical resistance, airtight sealing, and high-temperature tolerance. This vacuum pump is ideal for laboratories, chemical research, pharmaceutical production, and biotechnology applications—especially where corrosive gases or organic solvents are involved. It can be perfectly paired with glass reactors, rotary evaporators, distillation units, and more, providing a clean, efficient, and safe vacuum environment. Contact us now for detailed specifications and customized solutions!

Double-layer glass reactors are widely used in laboratory and industrial applications for their visibility, stable temperature control, and strong corrosion resistance. However, during actual operation, some common issues may arise. Based on user feedback, YangMai Technology Instrument summarizes several frequent problems and offers corresponding solutions below:   Issue 1: Poor Circulation or Slow Heating in the Jacket Possible Causes: Pipeline blockage, insufficient pump flow, or high-viscosity thermal fluid. Solutions: 1. Check if the pipeline or jacket has air blocks or debris; flush the circulation system if needed. 2. Replace with a circulation pump with a higher flow rate for improved efficiency. 3. Use recommended low-viscosity heat transfer fluids (e.g., ethanol or silicone oil).   Issue 2: Leakage Due to Poor Sealing Possible Causes: Worn dynamic seals on the stirring shaft, loose flange connections, or aging PTFE gaskets. Solutions: 1. Inspect the mechanical seal on the shaft; replace O-rings or gaskets if necessary. 2. Reinstall glass connections securely and ensure PTFE gaskets are intact. 3. Perform regular maintenance on sealing components to ensure long-term airtight performance.   Issue 3: Fragility or Breakage of Glass Parts Possible Causes: Improper handling, inadequate transport protection, or uneven external force. Solutions: 1. Avoid impact or sudden temperature changes (e.g., do not flush with cold liquid after heating). 2. Use custom foam packaging or wooden crates for transport. 3. If broken, glass parts can be individually replaced without affecting the entire unit. At YangMai, we focus on detail, durability, and ease of maintenance in every reactor system. All equipment undergoes rigorous factory testing and standardized assembly before shipment. We also provide professional technical support to help our customers minimize downtime and ensure smooth, continuous experiments. For technical manuals, maintenance guides, or operation videos, feel free to contact us anytime!