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How the PYRO SA Sulphate Ashing
works
The basic principles of operation are the
same as the PYRO, with the addition of the
Sulphate Ashing Module and the VAC-1000
Acid Scrubber. Sulfuric acid fumes released
from crucibles inside the muffle furnace are
continuously removed, through a quartz
tube connected to an air-cooled quartz
collection vessel mounted outside of the
unit, and to the VAC-1000 acid scrubber
module.
PYRO SA Sulphate Ashing System
Ashing test procedures performed on pharmaceutical, polymer, and food samples
frequently involve the use of H2SO4. Hot sulfuric acid vapor released during these
procedures is both hazardous to analysts and corrosive to equipment. In addition to these
complications, sulphate ashing procedures are typically labor-intensive and timeconsuming,
requiring manual fuming of acid from crucibles and 8-12 hours to complete.
Milestone has engineered a unique microwave system for sulphate ashing procedures.
The PYRO Sulphate Ashing system enables analysts to add H2SO4 to samples and place
crucibles directly into the microwave muffle furnace without a preliminary charring step.
Tedious handling/monitoring of samples, and operator exposure to acid fumes, are
eliminated.
The labstation is designed for complete operator safety and long life, and performs the
complete procedure in only 60-90 minutes.
Sulfuric acid fumes released from crucibles inside the muffle furnace are continuously
removed, through a quartz tube connected to an air-cooled quartz collection vessel
outside the unit, and to the VAC-1000 acid scrubber module.
Typical Sulphate Ashing times
Sample |
Microwave Ashing
Temp.(°C)
|
Microwave Ashing
Time(min.)
|
Traditional Ashing
Time(min.)
|
| Lactose |
600 |
60 |
480 |
| NFT |
800 |
50 |
480 |
| Cellulose |
800 |
80 |
500 |
| Heavy oil |
550 |
230 |
960 |
| Antibiotics |
850 |
65 |
480 |
| Tartaric acid |
800 |
80 |
5000 |
State of the Art User Interface
The PYRO SA is operated via a compact terminal with bright,
full-color, touch-screen display.
The terminal runs the Milestone’s unique EasyCONTROL
software, to provide simple, user-friendly control of the
microwave sample preparation process.
- Industrial grade touch-screen controller -
6,5” screen with 65.000 colours
- VGA resolution 640x480 for sharp process graphics
- 1 USB port for printer, 2 PS2 ports for mouse and
keyboard, 3 RS 232 ports for external devices
- Methods and runs are saved on a removable flash-card
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