Things you should know about Melt flow index tester

Melt flow index tester



Prioritizing the production process and the final product by assessing the polymer’s quality has various advantages. The maker can determine if a product meets established industry standards by conducting a quality test, indicating how that particular polymer will behave going forward during production. In light of this, evaluating essential aspects like the melt flow index of polymers is highly advisable. Let’s learn more about the testing process and the Melt flow index tester utilized for the evaluation.

Measuring a polymer’s flow while melting is known as “melt flow testing.” The outcome of a melt flow test is known as the melt mass-flow rate (MFR) or melt volume-flow rate (MVR), defined as the amount of volume or mass of the polymer which flows through the small die at a particular temperature & pressure.

The melt flow test itself is uncomplicated and uncomplicated. A piston laden with dead weights forces a small quantity of a thermoplastic sample (often in granule or flake form) out of a capillary die after melting it to a viscous fluid at a predetermined temperature in a barrel. Once the die has extruded enough sample material, it is withdrawn, weighed, or the machine measures the sample’s volume.

What exactly is a melt flow index tester (MFI)?

The highly sophisticated Testronix Melt Flow index tester is used to precisely measure the melt flow index of various types of plastic. To evaluate the quality of the plastic granules used in the molding of plastic items, you can use a Testronix melt flow index tester. This quality control testing tool can be used to gauge how rapidly heated material melts in a variety of industries. You may evaluate the various qualities of polymers and plastics by figuring out the melt flow index value. The Testronix MFI tester has a high heating capacity that ranges from room temperature to 400 0 C. Additionally, it contains a pre-set digital timer. This is very much essential to make the best Laboratory Testing Machines. 

Describe the Melt Flow Index.

The ease with which a molten thermoplastic polymer material flows is measured by the melt flow index, commonly known as the Melt flow index tester.

It is explained as the total mass of the polymer tested (in grams) flowing through a vessel with a set diameter and length in ten minutes while being subjected to a specific load at a specific temperature. The user must have a precision-based testing system to allow this complete procedure to proceed without errors.

What function does MFI value serve in the polymer industry?

For the consumer or maker of any polymer-based product to comprehend the molecular weight, comparison analysis comparing several grades of the same polymer material frequently uses the tested MFI value. This way, the utilizer can also have the idea of an exact grade of the polymer they want to utilize & select the best suitable option for some further production method.

Usually, a polymer’s MFR/MVR is inversely related to its molecular weight. Melt flow testing is widespread in quality control and process control labs, despite being less popular in R&D environments. It is primarily observed in manufacturing or converting plants.

What benefits do melt flow tests provide?

You can get the below-mentioned facilities from the best Laboratory Testing Machines:

  • A typical index value for evaluating internal content
  • A review of the entry materials’ quality
  • Comparing novel materials in a framework of product development
  • A tool for new material providers to use
  • Quick analyses of material batches
  • Calculating flow characteristics for straightforward extrusion procedures
  • Predictions of a polymer’s behavior under various processing conditions

The Testronix Melt Flow Index Tester: How Do I Use It?

You will be led by the technical team and the instruction manual when you acquire the Testronix MFI tester. However, reading about how this testing device functions will make it easier for you to test the melt flow index of plastics and polymers.

It would help if you leveled the machine before beginning the test.

You can use the plumb line with the machine to check the leveling of these testing devices. Put the plumb line inside the barrel after removing the orifice die from the machine. The machine is fully leveled if the plumb line is perfectly perpendicular to the ground.


To assess the caliber of your plastic, use the Testronix Melt Flow Index Tester.

For assessing the quantity and caliber of plastics used in items requiring high-caliber materials,

such as electronic equipment, the MFI tester is strongly advised. Testronix is an expert in offering premium melt flow index tests at competitive prices so you can make sure your product complies with all safety regulations.

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