Vulcan: Automated Block Digestion
Vulcan is the first automated workstation to combine the two essential steps of sample preparation; digestions and aliquot transfer. Vulcan is the only automated digestion system capable of preparing the samples to be analyzed by transferring an aliquot of the digestate to an autosampler rack which are then ready to be analyzed.

Vulcan Automated Digestion and Work-Up System: . . .

  • Improves lab safety
  • Lowers sample analysis costs
  • Contamination free environment for trace level sample preparation
  • Eliminates repetitive and tedious movements
  • Increases sample throughput
  • Unattended operations
  • Process up to 84 samples in 50 ml vials

The Vulcan Automates:

  • Precise addition of corrosive acids, reagents and internal standards
  • Multi-step heating of QBlocks
  • Final dilution at the end of digestion
  • Stirring and mixing of samples
  • Cooling samples between reagent additions
  • Transferring and diluting samples to autosampler racks
  • Two digestion methods at same time

Heating (QBlocks)...

  • Capable of heating up to 230º C
  • QBlocks available to accommodate 15, 25, 50 and 100 ml digestion vials
  • Vilas available in Teflon, Glass and Polypropylene material
  • Customise QBlocks are ailable to accept specific size and shape of digestion vessel
  • PTFE coated graphite block and housing to prevent contamination
  • Choice of All-plastic housing for extreme corrosion resistance
  • Unparalleled Temperature homogeneity of +/- 1.50 º C across the block

Post Digestion Sample Work-up . . .

Cooling Dilution, sample
transfer mixing
Wash Pannel
 
Makeup Volume (Final Dilution)::Sample levels are monitored for individual vials using a non-contact level sensor. The sensor reads the initial sample volume and dilutes the samples to the user’s specified volume.
 
Dilutions and Sample Transfer:: The PTFE-coated carbon fiber probe and sample loop picks up, stores, dilutes and transfers samples to autosampler racks. The sample probe and loop is thoroughly cleaned externally and internally between each sample. It is possible to generate multiple dilutions for one sample.
 
Heating & Cooling ::  Pneumatically driven tray lift moves samples in and out of the digestion block. This provides precise, automated heating and cooling of the samples.
 
Stirring :: Samples are homogenized by a stream of bubbles which force the sample to mix with the lighter diluent. The probe also moves laterally to help speed up this process. Duration of mixing for each sample is user defined.
 
Wash Station ::  The sample probes are washed in a dual chamber wash station to eliminate sample-to-sample cross contamination. The diluent flows within the well to clean the sample from the sample loop.   
 

Dispensing Reagents

  • Independent reagent lines reduce priming operations, increase dispensing speed and minimize contamination
  • Capable of handling corrosive acids like HF, H2SO4 and HClO4
  • Deliver reagents and acids as required by each sample in a single run, thus can handle multiple types of samples at one time
  • Can be configured to dispense reagents in multiple vials to increase the speed

    Syringe Pump

  • 6 individually operated syringes
  • PTFE-syringe to handle HF acid
  • All PTFE-values and fittings provide inert environment
  • Programmed to dispense precise amounts from 6 syringes at the same time
  • Easy mounting and replacement of syringes
 

 

Peristaltic Pump

  • 8 individually operated pumps
  • Accurate delivery over wide range of flow rates
  • Specialized design to provide low drift in the flow rate
  • Good repeatability in low volume dispensing
 

Diligent Software Control...

   
  • Easy-to-build digestion recipe with functional steps like reagent addition, heating, stirring, sample transfer, washing and autosampler rack preparation
  • Offers unique functionalities like Heat to Dryness and Precipitate / Residue washing
  • Easy-to-set automation functions resulting in quick optimisation of the whole process
  • Capable of altering processing for individual vials in single run
  • Allows running of different digestion method at same time on each block
  • Easy-to-configure a variety of QBlocks and sample rack configurations
  • Accepts rush, urgent or stat samples during the run
  • Accepts changes to method during the run
  • Capable of continuing process after interruptions
  • Estimates and displays digestion method time and progress
  • Prompts when reagent bottles need replacement
  • Process reporting capability

All Plastic Housing . . .

  • Saves prime lab space with built-in fume hood
  • Rated for perchloric acid with a detachable exhaust manifold to facilitate washing
  • All plastic construction suitable for trace level sample preparation
  • Laminar flow exhaust path for acid fume removal
  • Positive air pressure in electronic section prevents acid corrosion
  • Option of HEPA or ULPA filter attachment
  • Provides catchment basin for any reagent spillage
  • Has transparent window for light illumination and visual observation