Improving time and throughput with microwave ashing

Dry ashing is based on the decomposition of organic material by the action of oxygen at elevated temperatures.
Determination of the ash content, whether for process control or as a preparation method for other analytical techniques, is an important test performed daily in thousands of laboratories worldwide.
The ashing process is done in conventional muffle furnaces that often offer inefficient, tedious, and timeconsuming procedures. The use of microwave heating for dry ashing applications has been represented a breakthrough in the process and quality control of samples like polymers, petroleum, food and feeds, pulp paper and pharmaceuticals.
The PYRO microwave muffle furnace, is available in three interchangeable configurations: high sample throughput, sulfated ashing, ultrafast heating.

Fast ashing process

Advanced microwave heating in just 8 minutes instead of hours!

High sample throughput

Breakthrough in the process and quality control.

Three configurations

Standard method compliance

ASTM, USP, SEMI and ISO fully compliance.

Green technology

The PYRO embraces the values and benefits of the green approach, in fact it offers more efficient heating and saves energy. The accurate microwave emission and the great insulating capacity of the microwave-transparent muffle minimize energy waste.
Milestone Green Technology

Over 90% Time Saving

SampleTemperature (°C) Time (minutes)
Pet Food
575
20
Milk Powder
550
20
Wheat Flour
900
50
PVC
900
15
Coal
750
20
Heavy Oil
550
45
Rubber Tyre
550
45
Lactose
600
60
Antibiotics
850
60

Read our customer's experience

Reading Scientific Services Ltd.: Contract service lab relies on microwave ashing to improve turnaround time on food matrices

RSSL invested in a microwave muffle furnace to expedite their ash content determination on specific food matrices. After several equivalency tests, the PYRO showed excellent reproducibility and time saving over a conventional muffle furnace, allowing RSSL to validate the method on several matrices for total ash content as well as for elemental analysis.
PYRO microwave muffle furnace

Efficient airflow

The unique design of the venturi system enables faster ashing and safer conditions without the need of an additional gas line. The continuous and adjustable airflow expedites the sample combustion and the removal of fumes during the ashing process.

Rugged and powerful hardware

The PYRO is designed to last! The stainless-steel construction and the high microwave power offer high reliability, fast heating rate, and superior working conditions as it does not expose the operator to heat or fumes.

Fast and even heating

The silicon carbide heating element, along with the high microwave power, provides fast and even heating across the entire muffle, allowing reproducible conditions in all crucibles.

Accurate control

The built-in sensor controls the muffle temperature during the entire program and continuously dialogues with the smart software to adjust the microwave energy based on the desired temperature profile.

Smart user interface

All the process parameters are controlled by the advanced terminal and software. Simply select a built-in method or create a new one and press “START” to begin the ashing procedure.

Microwave transparent muffle

All the process parameters are controlled by the advanced terminal and software. Simply select a built-in method or create a new one and press “START” to begin the ashing procedure.
  • Efficient airflow

    The unique design of the venturi system enables faster ashing and safer conditions without the need of an additional gas line. The continuous and adjustable airflow expedites the sample combustion and the removal of fumes during the ashing process.
  • Rugged and powerful hardware

    The PYRO is designed to last! The stainless-steel construction and the high microwave power offer high reliability, fast heating rate, and superior working conditions as it does not expose the operator to heat or fumes.
  • Fast and even heating

    The silicon carbide heating element, along with the high microwave power, provides fast and even heating across the entire muffle, allowing reproducible conditions in all crucibles.
  • Accurate control

    The built-in sensor controls the muffle temperature during the entire program and continuously dialogues with the smart software to adjust the microwave energy based on the desired temperature profile.
  • Smart user interface

    All the process parameters are controlled by the advanced terminal and software. Simply select a built-in method or create a new one and press “START” to begin the ashing procedure.
  • Microwave transparent muffle

    All the process parameters are controlled by the advanced terminal and software. Simply select a built-in method or create a new one and press “START” to begin the ashing procedure.

High-capacity for superior productivity

Rugged and durable construction
The PYRO is built to offer superior working conditions and a more efficient ashing procedure on a wide range of matrix. It incorporates in a single platform a rugged hardware, a reliable microwave-transparent muffle, an efficient exhaust, an accurate temperature control and a smart user interface.

Smart
User Interface

All the PYRO configurations are controlled via a compact full-colour, touchscreen display. The user interface runs a user-friendly, icon-driven, multi-language software to provide easy control of the process. The software automatically regulates the microwave power according to the temperature profile desired, ensuring great reproducibility. The dedicated Milestone Validation Package, along with the 21 CFR part 11 compliance, meet the GMP requirements and provide high standards of operation. The PYRO is compliant with several official methods such as ASTM, USP, SEMI and ISO, preloaded into the terminal.

Smart
User Interface

All the PYRO configurations are controlled via a compact full-colour, touchscreen display. The user interface runs a user-friendly, icon-driven, multi-language software to provide easy control of the process. The software automatically regulates the microwave power according to the temperature profile desired, ensuring great reproducibility. The dedicated Milestone Validation Package, along with the 21 CFR part 11 compliance, meet the GMP requirements and provide high standards of operation. The PYRO is compliant with several official methods such as ASTM, USP, SEMI and ISO, preloaded into the terminal.
EasyWAVE Operating Software

A dedicated configuration for every need

The PYRO is available in 3 different and interchangeable configurations: high sample throughput setup, sulfated ashing setup and ultrafast heating setup; it is therefore the most flexible and adaptable microwave muffle furnace available in the market.
High Sample Throughput

High Sample Throughput configuration for routine applications

PYRO is built to offer superior working conditions and a more efficient ashing procedure on a wide range of matrices. It incorporates in a single platform a rugged hardware, a reliable microwave-transparent muffle, an efficient exhaust, an accurate temperature control and a smart user interface. Sample crucibles are placed on a large clean quartz plate and an airflow is induced by a built-in exhaust system. A porous ceramic honeycomb frit built into the wall of the muffle furnace allows a constant stream of air to pass over the sample crucibles. The combination of microwave “superheating” and induced airflow results in a dramatic reduction of the ashing time. Any type of crucible (metal, porcelain, quartz, etc.) can be used.

Sulfated Ashing for safer and faster procedures

Ashing of samples like pharmaceutical and petroleum often involves the use of sulfuric acid that leads to hazardous acid vapours and is a labour-intensive procedure. The traditional approach requires the manual fuming of acid for several hours with high risks for the operator. The PYRO Sulfated Ashing configuration enables the operator to complete this test in a single step. Sulfuric acid is added to the sample, and the crucibles are placed into the muffle without any preliminary charring step. The acid fumes are continuously collected, condensed, and neutralized by the dedicated water-cooled scrubber module. With the PYRO Sulphated Ashing configuration the procedure is typically completed in less than two hours, eliminating any tedious and unsafe handling.
Sample
Sample
Sample with sulfuric acid
Sample with sulfuric acid
Charring step
Charring step
At the completion of the ashing process
At the completion of the process
UltraFAST Heating

UltraFAST heating muffle for rush samples and high temperature applications

The PYRO with ultrafast muffle reaches a temperature of 800°C in just 5 minutes, starting from room temperature and enables applications up to 1200°C. The temperature is monitored and controlled via a contactless infrared sensor. The unmatchable heating rate of this PYRO configuration offers a solid option for QC labs to provide rapid feedback to their production and to any lab dealing with rush samples. Due to its heating rate, the ultrafast muffle has a natural fit for many high-temperature applications requiring no heating/cooling inertia, such as sintering or fusion.

Reduce your ashing time with the right choice of Crucibles

The type and the size of the sample crucibles have a great influence over the ashing process, both in terms of time and quality of results.

ultraFAST Crucibles

The UltraFAST crucibles allow the PYRO user to dramatically reduce the overall ashing time, from start to end. They are made of an innovative material that, although chemically and thermally resistant, allows the samples to be surrounded by a constant airflow which, in turn, accelerates the ashing process. Furthermore, the cooling time is so short that there is no need to use a dessicator prior samples weighing. Just 30 seconds are enough to go from 1000°C to room temperature. The UltraFAST crucibles are suitable for the ashing of any solid sample, such as polymers, pharmaceuticals, food and feed, cokes, coals etc.

Shorter ashing time
Fast heating and cooling
High chemical and thermal stability
Constant weight
Long lifetime

Self-closing Quartz Crucibles

The self-closing quartz crucibles and dedicated rack ensures fast Carbon Black Determination In Olefin Plastic and high reproducibility compared with the reference method ASTM D1603, thus avoiding the use of nitrogen. The vacuum generated during the release of combustion fumes ensures perfect sealing and an inert athmosphere the quartz crucibles, allowing for complete determination of the carbon black. The self-closing quartz crucibles and microwave heating allow for carbon black determination in only a few minutes, obtaining superior data reliability and reproducibility.

Shorter ashing time
Fast heating and cooling
High chemical and thermal stability
Constant weight
Long lifetime

Connect with us
Connect with us
Contact us directly by phoning at +39 035.573857
or discover your National Representative to get local support.