Micro Dispenser Machine

Micro Dispensing Automation

For use with MARS Microwave Digestion System turntables and vessels

The MARS Micro Dispenser is a specialised laboratory automation solution designed to streamline the high-throughput sample preparation workflow for microwave digestion. By automating high-risk, repetitive tasks - including vessel decapping, precision acid dispensing, and recapping - the system significantly minimises the manual handling of hazardous chemicals and aggressive reagents.

System Overview

Designed for high-throughput sample preparation, the MARS Micro Dispenser bridges the gap between sample loading and microwave digestion. The system features a chemical-resistant fluoropolymer (PTFE/PFA) fluid path and borosilicate gas-tight syringes, specifically engineered for the safe handling of concentrated acids and corrosive reagents. The robust gantry system manages the complete vessel cycle - removing the cap and bung, dispensing up to four different liquids, and securely re-sealing the vessel - without human intervention.

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Key Features

  • Provides Walk-Away Automation
  • Automated Capping & Decapping: to ensure consistent vessel sealing. Consistent torque-controlled recapping across all 40 vessels to ensure safety during high-pressure digestion cycles. with configurable application torque
  • Precision Volumetric Dispensing: Four-channel pump array (Syringe & Micro) providing volumetric accuracy down to 1% (or +/- 5μl for 500μl dispenses)
  • Intelligent Vessel Recognition: Integrated vessel detection sensing and optional non-contact ultrasonic level sensing for automated volume verification.
  • Active Fluid Path Protection: nitrogen (lab-supplied) line flushing to prevent cross-contamination and ensure clear reagent delivery between cycles.
  • Integrated Control & LIMS Traceability: Software tailored to your workflow. LIMS integration (if required) ensures ISO 17025 compliance by automatically logging every dispense volume, reagent batch, and torque value for a full audit trail.


Application & Workflow Compatibility

The MARS Micro Dispenser is suitable for:

  • High-Volume Dairy & Food Testing: to standardise mineral and heavy metal prep.
  • Trace Elemental Analysis: Ensuring contamination-free reagent dosing for ICP-MS and ICP-OES workflows.
  • Aggressive Acid Handling: Full PTFE/PFA fluid path for safe, automated dispensing of HNO₃, HCl, and HF.
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Key Benefits

  • Prioritise Safety: Minimises operator exposure to hazardous fumes and dangerous chemicals.
  • Frees up laboratory technicians for higher-value analytical tasks.
  • Reduces Repetitive Strain Injuries (RSI) by automating manual capping.
  • Repeatable and accurate dispensing for consistent ICP-MS and ICP-OES results.
  • Audit-Ready Data: Provides total transparency and digital records for every sample.
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Software Interface

The MARS Micro Dispenser features a touch screen with software tailored to your specific laboratory workflow.

  • LIMS Integration: Communication with your Laboratory Information Management System ensures full sample traceability from initial scan to final digestion.
  • Automated Logging: Every dispense volume and reagent batch is electronically recorded, eliminating manual transcription and providing a robust audit trail for ISO 17025 compliance.
  • Customisable Workflows: Easily configure sequence protocols for different sample matrices and vessel types.

Technical Information

Cycle Time Examples

38 min / full 40-vessel turntable (Standard) or 56 sec per vessel (3 liquids at 0.5ml, 2ml and 5ml)

76 sec per vessel with volume detection to 50ml or 51min for a full 40 vessel turntable

Dispensing System

3x Gas-tight Borosilicate Syringe Pumps, 1x Micro Pump (4 configurable lines)

Wetted Materials

Teflon (PTFE/PFA), Borosilicate Glass

Fume Extraction

Customer supplied. Recommend 5-7m3/min, if required

Compressed air supply

6 bar, clean and oil-free, Nitrogen - lab supplied

Power supply

220 – 230 VAC, 50 Hz

Dimensions

1870mm (L), 650mm (D), 770mm (H)

Standards

AS/NZS 4024:2014, IEC60204-1:2016, ISO 13849-1:2015, Regulation 2023/1230/EU - Machinery

Note: Specifications above subject to change without prior notice

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