General Laboratory Equipment

OVERHEAD STIRRER (HYDROMETER)

An overhead stirrer is a laboratory instrument used for mixing and homogenizing liquids, especially when dealing with large volumes or high-viscosity substances that a magnetic stirrer cannot handle.It works by rotating a stirring element (impeller, paddle, or blade) immersed in the liquid, driven by a motor mounted above the vessel. Overhead stirrers are versatile and find applications in various industries, including chemical synthesis, pharmaceuticals, and food production. 

Our high-quality paddle stirrers are designed and manufactured in South Africa, built to comply with SANS 3001-GR3: ED1.2, Clause 4 (Apparatus). These units provide reliable performance and durability, making them ideal for laboratory and industrial applications.

 

MODELS AVAILABLE

  • 3-Paddle Stirrer
  • 6-Paddle Stirrer

 

SPECIFICATIONS

  • Material: Stainless Steel blade and shaft for corrosion resistance and longevity.
  • Motor Speed: Rated at 1550 RPM, tested with a tachometer to ensure compliance
    when operating at 230V. Tested speed @ ±1450rpm
  • Power Supply: Standard 230V power input.
  • Surge Protection: Supplied with a high-level surge protection plug for added safety.
  • Adjustable Feet: Included for stability and leveling on various surfaces.

FEATURES & BENEFITS

  • Durable Construction: Made from high-quality materials to ensure long-lasting use.
  • Precision Performance: Motor speed verified for compliance with SANS 3001-GR3 standards.
  • Enhanced Safety: Built-in surge protection for added electrical safety.
  • User-Friendly: Easy setup with adjustable feet for stability.

 

APPLICATIONS

  • Laboratory testing (Hydrometer)
  • Material mixing
  • Quality control procedures

 

 

 

GENERAL OVERVIEW ON HOW T USE AN OVERHEAD STIRRER: 
  1. 1. Choose the Right Impeller:

    Select an impeller that is compatible with the liquid and its chemical composition, and can withstand the desired temperature. 

  2. 2. Secure the Vessel:

    Ensure the vessel is securely clamped to the stirrer stand to prevent movement during operation. 

  3. 3. Start the Stirring:

    Begin stirring at a low speed and gradually increase as needed, observing the liquid’s behavior. 

  4. 4. Adjust as Necessary:

    Modify the speed, temperature, and other settings as required by the experiment. 

  5. 5. Safety First:
    Never leave the stirrer unattended, and follow the manufacturer’s instructions for safe operation.