Automated Metals Digestions
Automated Metals Digestions
The analyst initiates a method or multiple
methods and the AutoBlock does the rest.
To operate, the analyst chooses up to three pre-programmed methods,
loads samples into the AutoBlock, closes the door and presses the start
button. Depending on the method being run, the dispensing arm adds the
appropriate amount of the specified reagent to the samples, the samples
are lowered into the heated block and the temperature is held at the desired
level for the allotted time period. When the procedure calls for additional
reagents to be added, the AutoBlock lifts the samples, turns off the heat and
cools the samples to <40C with HEPA-filtered air. After cooling, additional
reagents are safely added to the samples. The samples are then lowered back
into the graphite block, the block re-heats and digestion continues. A visual
alarm alerts the analyst that the digestion procedure is complete. With the
AutoBlock, reagent additions and digestion times are timed automatically
and performed on schedule. This uniformity improves productivity and
provides consistent results. The analyst can monitor progress or check the
status of the digestion procedure by viewing the control screen at any time.
Superior construction and design expands
functionality and minimizes corrosion.
Three 18-place racks can be operated independently allowing the analyst
to perform up to three programmed digestion methods during one
digestion cycle, using up to ten reagents per method.
Constructed from Teflon, graphite, Kydex and other corrosion-resistant
materials, all components are designed to withstand the harsh
environment of the metals lab.
The unit is self-contained and easily vented, no fume hood necessary.
Internal exhaust blowers are controlled automatically.
The detachable control module isolates and protects electronics from
After each reagent addition, the entire fluid delivery system is purged with
DI water to prevent corrosive reagents from remaining in the system. The
reagent delivery system and dispensing arm motors are isolated from the
acid environment of the digestion chamber.
To eliminate corrosion and avoid sample contamination, metal components
of the AutoBlock are kept to an absolute minimum. The HEPA-filtered
enclosure which houses the AutoBlock is formed of thermoplastics, Kydex
and Acrylic. The heated block is milled from graphite and coated with
Teflon. Even the guide rod of the reagent dispensing arm is Teflon-coated
to prevent corrosion and sample contamination. The AutoBlock is vented
and purged continuously with HEPA-filtered air during and after operation.
The corrosion free ventilation system that drives the air is activated
automatically any time the unit is in operation or whenever the block
temperature rises above 40C. All components are designed to withstand the
harsh environment of the metals lab.
AutoBlock Replacement Parts:
Replacement HEPA Filter
18-place Polycarbonate Racks (set of three) ABP163
With the AutoBlock, reagent additions
and digestion times are timed
automatically and performed on schedule.
This uniformity improves productivity and
provides consistent results.
The controller logs and records all
digestion procedures, step by step. Data
can easily be transferred to a PC or other
back up device via the USB port.
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