Muffle Furnace to Test Ash Content

Reviewed by Anurag Mishra (Sr. Technical Consultant)

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The Testronix muffle furnace is used to determine the ash content of a specimen.

The percentage of ash in a material gives important insights into the properties of the substance.

The Testronix muffle furnace is specially designed as per IS & ASTM Standards.

It finds wide application in various fields such as Medical research, agricultural, industrial, metal treatment, rubber & wool industries, metal treatment, ash determination.

The percentage of ash is calculated as the index of added mineral matter or loading.

A known weight of the specimen is burnt, the ash is weighed, and the percentage is calculated.

The Testronix Muffle furnace is finished in Autumn Gray & Blue combination painting to give it a corrosion resistant finish.

The Instrument comes complete with Instruction Manual; Electrical Wiring Diagram & Calibration Certificate traceable to NABL approved Labs.

Optional Accessories:

  • Digital Timer
  • PID Controller with Computer/printer interface.

Useful for :

  • Foam And Gaskets
  • Wood & Laminates
  • Polymers

Muffle Furnace is a unique test cabinet designed to detect the percentage of ash content in a particular test specimen like rubber, elastomers.

It is Bench top model and is used to evaluate the amount of inorganic compound in a test material.


  • Temperature sensing through J-type sensor.
  • Highly accurate test results under uniform temperatures.
  • PID Control for Temperature.
  • High Grade density imported Glass Wool Blanket insulation.
  • Maximum Thermal Efficiency by insulation means.
  • SSR based heaters.
  • Auto tuning Advance PID controller


Inner Chamber Sizes Available (Other Sizes on request):

  • 4*4*9 inch
  • 5*5*10 inch
  • 6*6*12 inch
  • Display: Graphical LCD (Digital)/LED
  • Accuracy: ± 5ºC
  • Least Count/Resolution: 1ºC
  • Sensor: J-type/K-type as per selection of range
  • Power: 20A, 220V, Single phase, 50 Hz
  • Timer Range: Up to 999 hrs

Temperature Range: Ranges available -

  • Ambient - 900ºC,
  • Ambient - 1200ºC
  • Ambient - 1400ºC

Selectable as per requirement. Other sizes available on request.


  • Highly accurate test results under uniform temperatures in the chamber
  • High Grade imported Glass Wool insulation
  • Maximum Thermal Efficiency by insulation means.
  • Advanced Digital Microprocessor based PID based temperature controller
  • Auto tuning Advance PID controller
  • SSR-based output control


Gloves, Tonge Set, Crucible

Optional Features:

  • Other Size and temperature range available.
  • Timer available on request
  • Prima Series Muffle Furnace also available



  • Insulation: High grade ceramic insulation
  • Handle: Yes
  • Exhaust Port: Yes
  • Material: Mild Steel (Outer Body) Ceramic Brick (Inner Body)
  • Finish: Powder coated Havel Grey & Dark Grey combination finish and bright chrome / zinc plating for corrosion resistant finish

Model MF - 4 (900)

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