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Hanatek Melt Flow Indexer (MFI)
Hanatek Melt Flow Indexer (MFI)
Hanatek Melt Flow Indexer (MFI)
Hanatek Melt Flow Indexer (MFI)
Hanatek Melt Flow Indexer (MFI)
Hanatek Melt Flow Indexer (MFI)
Hanatek Melt Flow Indexer (MFI)
Industries & Applications
  • Packaging
  • Plastics

Hanatek Melt Flow Indexer (MFI)

  • Precise MFI Measurement to ISO1133 and ASTM D1238
  • Tri-zone temperature control / monitoring
  • User interchangeable barrel core
  • Operator Safe – automatic cleaning cycle


All GBP prices are exclusive of UK VAT (where applicable)

Prices exclude local duties – Purchase through your local agent

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Extended warranty

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What is a melt flow test?

A melt flow test measures the melt mass flow rate (MFR) and melt volume flow rate (MVR) of a molten polymer under standardised load and temperature conditions.

The two most important standards are the European ISO 1133 and American ASTM D1238. MFR is also referred to as melt flow index, or MFI.

MFR provides an efficient way of indicating the viscosity of a polymer in the melt phase and also serves as a recognised and well established quality control parameter; most polymers are described by their MFR and this often forms the basis of a suppliers certificate of conformity. A high MFR value indicates a low viscosity and conversely, a low MFR, a high viscosity. By implication, MFR is also indicative of average molecular weight (Mw); low MFR equates to high Mw and high MFR, low Mw.

The MFR value gives a value to the polymer’s ability to be processed. MFR is a fast and reliable test which can be implemented on the shop-floor with minimal training.

The Hanatek MFR has been designed to meet both standards and provide the most accurate values by virtue of its sophisticated temperature control.

Why measure melt flow?

Understanding melt flow is a key indicator for producers, processors and converters of plastic materials as it dictates the temperatures and pressures required to manufacture consistent quality products.

How to calculate Melt Flow Rate

Testing is performed using a melt flow indexer in accordance to either ASTM D1238 (Melt Flow Rates of Thermoplastics by Extrusion Plastometer) or ISO 1133 (Determination of the Melt Mass-Flow Rate and Melt Volume Flow Rate of Thermoplastics).

The instrument consists of a temperature-controlled cylindrical annulus through which a polymer melt is forced to flow through a die of specific length and diameter using a piston actuated by a standard weight. The weight of melt in grams flowing through the capillary in 10 minutes is the MFI of the polymer.

MFI diagram

Precise measurement

The Hanatek MFI measures a number of parameters to ensure accurate results.

MFI/Melt Flow Rate (MFR)The speed in which a molten polymer flows through an orifice of a given dimension over a certain time
Melt Volume Rate (MVR)How quickly a material melts
Melt DensityMelt Density is a measurement provided by dividing the mass from the MFR test by the volume from the MVR test
Shear Stress/RateShear rate is the rate at which a fluid is sheared or “worked” during flow
Melt ViscosityMelt Viscosity measures the extrusion rate of thermoplastic materials through an orifice at a prescribed temperature and load. It provides a means of measuring the flow of a melted material which can be used to evaluate the consistency of materials


Tri-Zone barrel heating and control

Stable and accurate temperature is maintained across the entire barrel length ensuring exact compliance to all international standards.

Accurate results

The piston travel sensor accurately reports the flow rate of the polymer throughout the test.

Temperature monitor and control

The included barrel temperature monitor ensures that every test is made to exact temperature specifications. Deviations in measurement can be quickly identified and fine tuning of the barrel can be actioned.

Why is this important?

Almost 80% of MFI in current use have temperature variations of up to 20C across the barrel*, leading to inaccurate test results and potential raw material failures.

MFI precise measurement probe
MFI temperature check screen

Repeatable measurement and easy to use

Fully automated

Automatic Testing

With automatic weight control and displacement sensors every test is fully motorised; no user intervention is required to start tests or monitor conditioning times.

Automatic Calculation

Touch screen control with preloaded test routines for MFI / MFR / MVR / melt density / shear rate / stress / melt viscosity / spread values.

Results are automatically calculated for each polymer type, elimination the chance of human error.

User Changeable Barrel Core

This feature eliminates the high cost and inconvenience of an offsite repair due to
barrel damage.

A replacement barrel can be fitted to the Hanatek MFI at any time to ensure instrument fully complies to international standards.

User certifiable

UKAS Certified Calibration Kit

The Hanatek MFI can be annually serviced by the user whilst maintaining full UKAS/ISO 17025 certification, eliminating the cost of an onsite calibration service or return to manufacturer calibration.

Operator safe

Automatic Cleaning Cycle

An automated cleaning process minimises the risk of contact with hot apparatus whilst completely eliminating the risk of RSI.

MFI test select
Automatic Testing
MFI barrel core
User Changeable Barrel Core
MFI optional accessories
UKAS Certified Calibration Kit
MFI automatic cleaning
Automatic Cleaning Cycle


MFI product
Cylindrical barrel

A precise honed bore of 9.55mm diameter.

Test weight 2.16kg
Barrel temperature monitor

A PT100 sensor ensures that every test is made to exact temperature specifications.

Touch screen

Easy to use and intuitive with clear instructions to guide you through every step.

Adjustable feet

Ensure the instrument is level before use by adjusting the feet individually.

Durable piston

Solid steel, precisely controlled diameter.

Barrel temperature monitor

External probe verifies the temperature of the barrel prior to test.

Printer available

A time and date stamped self adhesive label that can be attached to the job sheet.

Accurate results

Total barrel length to be controlled to ±0.2°C.

Insulated barrel

The barrel is fully insulated minimising heat transfer from barrel to casing.



The package includes

MFI temperature probe accessories
Temperature probe
MFI piston
MFI barrel core
Barrel core
MFI filling funnel
Filling funnel
MFI pallet knife
Palette knife
MFI die
MFI die cleaning
Die cleaning tool
MFI die retainer
Die retainer
MFI cleaning probe
Cleaning probe
MFI 2.16kg wright
2.16kg weight
MFI cleaning patches
Cleaning patches
MFI gloves
Heat resistant gloves

Optional accessories

MFI test weights
Test weights
range: 5 – 21.6kg
CFT accessories - printer
Result printer
MFI recalibration kit

UKAS Certified re-calibration kit

  • Barrel core
  • Barrel changing tool
  • Die (2.095mm diameter)
  • Temperature calibration probe
  • Calibration activation code
  • Piston


Instrument Information
StandardsISO 1133, ASTM D1238 (Part A, B & C), BS 2782
Range40°C - 400°C
Power120V 50Hz / 230V 60Hz
Dimensions500mm (H) x 350mm (W) x 242mm (D)
Packed weight15.5kg
Packed dimensions530mm (H) x 430mm (W) x 430mm (D)
Commodity code9026 1029
Temperature Probe Information
Measurement3 x PT100 Sensors
Range0°C - 500°C
CalibrationUKAS / ISO 17025
Order Codes
MFI 115VHAN-A4050MFI/115V
Free extended warranty

Free extended 2 year warranty: Requires registration at within 28 days of purchase. Without registration, 1 year standard warranty applies.

Calibration and service

Fast and economic service via our global network of accredited calibration and service centres. Please visit for detailed information.

Answers to common questions about our instruments and measurements

Why measure gloss?

Gloss is an aspect of the visual perception of objects that is as important as colour when considering the psychological impact of products on a

Read More »

What is RSpec?

RSpec is the peak reflectance measured over a very narrow angular band in the specular direction (+/-) 0.0991º. RSpec is very sensitive to any texture

Read More »

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Hanatek Melt Flow Indexer (MFI)