Viscosity Tube Model STEM Lab Manufacturer,Supplier and Exporter in India

Product Code : SCL-MH-12475

The Viscosity Tube Model STEM Lab is a high-precision fluid mechanics apparatus engineered to demonstrate the fundamental principles of viscosity, fluid resistance, and drag force. Manufactured by Educational Instrument India, this tactile educational kit allows students to quantitatively analyze how different liquid mediums impact the terminal velocity of a falling sphere. It serves as an essential instructional asset for physics and fluid dynamics setups in high schools, polytechnic institutes, and STEM excellence centres.

Why Choose Educational Instrument India?

As a premier developer of institutional scientific instruments, Educational Instrument India designs laboratory apparatuses that balance absolute structural integrity with strict adherence to academic curricula. Our STEM lab models match the exact tender-compliant specifications demanded by major boards—including CBSE, ICSE, and international technical diploma standards—providing educators with a reliable, durable, and highly accurate teaching tool.

Product Description

The Viscosity Tube Model STEM Lab provides an intuitive visual gateway into the mechanics of friction within liquids. The model features a series of parallel, high-transparency vertical cylinders filled with fluids of varying viscosity indexes (such as high-grade glycerin, pure castor oil, and mineral oils of calibrated densities).

By releasing a precision steel or glass sphere into the tubes, students can track its motion. Once the downward gravitational force balances the buoyant force and the upward viscous drag force, the sphere reaches its terminal velocity.

Product Specifications

How to Use the Model

Leveling the Apparatus: Place the viscosity unit on a flat, vibration-free laboratory bench. Adjust the integrated base screws until the vertical tubes are perfectly plumb.

Fluid Verification: Ensure the tubes are adequately filled with the provided pre-calibrated test fluids and that no air bubbles are trapped along the tracking path.

Release the Sphere: Place a test sphere of known radius and density into the guide aperture at the top of the first tube.

Time Tracking: Using a digital stopwatch, record the time the sphere takes to pass between specific graduated line markers near the bottom half of the tube, where terminal velocity is constant.

Calculate and Compare: Use the measured velocity to solve for the fluid's dynamic viscosity. Repeat the process across the other fluid tubes to draw a comparative friction profile.

Non-Toxic Fluids (Respiratory & Dermatological Safety): Traditional fluid mechanics tests occasionally used unstable or industrial chemical blends that released toxic vapors or triggered severe contact dermatitis. Our kit uses only eco-friendly, pharmaceutical-grade, highly stable fluids. This completely eliminates respiratory irritation or skin allergy health issues during student handling.

Shatterproof Engineering (Physical Trauma Avoidance): Using cheap, thin glass tubes creates a severe laceration health issue if an apparatus accidentally tips over. Our viscosity columns are milled from high-molecular-weight, industrial-grade acrylic that withstands intense impacts without cracking or shattering.

Ergonomic & Chemical Containment: The tubes are permanently sealed with chemical-resistant silicone endcaps, preventing accidental spills or skin contact with the viscous fluids. The weighted base lowers the center of gravity, preventing tipping hazards during collaborative group studies.

Frequently Asked Questions (FAQ)

Q1: Why must the timing measurements be taken only in the lower half of the tube?

A: When the sphere is first dropped, it accelerates due to gravity. It takes a short distance for the upward drag and buoyant forces to balance the weight. Measuring in the lower half ensures the sphere has fully stabilized at its constant terminal velocity, giving accurate mathematical data.

Q2: Can we fill these tubes with our own custom liquids?

A: The kit comes permanently or semi-permanently factory-sealed with specialized, long-life, non-degrading fluids to prevent leaks and maintain calibration. For custom fluid testing, we recommend utilizing our unsealed variable-fluid variants, which feature fully removable, threaded top collars.

Q3: How does temperature affect the performance of this model?

A: Viscosity is temperature-dependent (liquids generally become less viscous as temperature increases). Educational Instrument India includes a thermal correlation chart in the user manual so students can adjust their Stokes' Law calculations based on current room temperature