Direct Mercury Analyzer - CVAAS Mercury Tester - 0.001 ng Detection Limit - 5 min/Sample

The Master Science Direct Mercury Analyzer determines total mercury in solid, liquid and gas samples without acid digestion. Each sample is dried and decomposed in an oxygen stream, mercury is collected on a gold amalgam trap, and the released vapour is measured by cold vapour atomic absorption at 253.7 nm.

Because sample preparation steps are removed, the risks of contamination, memory effect and reagent loss are much lower, and a typical result is ready in about five minutes.

Technical Specifications

The Master Science Direct Mercury Analyzer is offered in two models; specifications are listed below.

• Brand: Master Science
• Model Number: MSDMA-5SWISS, MSDMA-5PSWISS
• SKU: MSDMA-5SWISS, MSDMA-5PSWISS
• Available Models: MSDMA-5SWISS and MSDMA-5PSWISS
• Measurement Principle: Thermal decomposition, gold amalgamation, cold vapour AAS
• Measurement Range (MSDMA-5SWISS): Long cell 0 to 40 ng; short cell 40 to 1000 ng
• Measurement Range (MSDMA-5PSWISS): Ultra-long cell 0 to 10 ng; long cell 0 to 40 ng; short cell 40 to 1000 ng
• Detection Limit: 0.005 ng (MSDMA-5SWISS); 0.001 ng (MSDMA-5PSWISS)
• Analysis Time: About 5 min per sample
• Light Source: Low-pressure mercury lamp
• Wavelength: 253.7 nm
• Detector: Silicon UV photodetector
• Repeatability: RSD < 1.0 % at 1 ng
• Sample Size: Up to 1500 mg solid or 1500 µL liquid
• Catalytic Furnace Temperature: Ambient to 1000 °C
• Mercury Trap Power: 0 to 100 W
• Detection Cell Temperature: Ambient to 150 °C
• Autosampler: 100 positions (10 × 10)
• Sample Boats: Quartz or nickel

Key Benefits

• No digestion step: solid and liquid samples go straight into the instrument, saving hours of preparation and acid use.
• Low-level sensitivity: pre-concentration of more than 40 times and a nano-gold amalgam trap capture trace mercury efficiently.
• Consistent results: PID-controlled furnaces and double-beam lamp correction in the Master Science Direct Mercury Analyzer remove drift from temperature and source changes.
• No carryover: a heated detection cell and automatic cleaning after high samples prevent memory effects.
• Unattended runs: the 100-position autosampler can work for more than eight hours without an operator.

For other trace metals in the same samples, labs often add the Master Science atomic absorption spectrophotometer.

Product Features

Measurement System

• Double-beam lamp correction with dynamic drift compensation
• Automatic calibration curve switching by concentration
• Series absorption cells for a wide working range

Sample Handling

• 100-position three-axis autosampler
• Priority samples can be inserted at any time without stopping
• Balance interface for automatic weight import

Running Cost

• Separately replaceable combustion and amalgam tubes
• No water-removal consumables

Expansion Options

• Stannous chloride reduction and gas capture sampling
• Liquid sample volumes from 5 to 250 mL
• High and low concentration switching
• Gaseous mercury measurement with gas bags or sorbent tubes

Applications

The Master Science Direct Mercury Analyzer serves laboratories in:

• Food and seafood safety testing
• Soil, sediment and environmental monitoring
• Pharmaceutical and traditional medicine testing
• Agriculture and feed analysis
• Petrochemical, coal, mining and power plant laboratories

Optional Accessories

• Electrothermal decomposition module
• Stannous chloride reduction module
• Gas capture and direct gas sampling
• Gaseous mercury detection upgrade

Common Laboratory Problems and How This Analyzer Helps

How the Master Science Direct Mercury Analyzer addresses frequent mercury testing problems:

• Long digestion and preparation: direct thermal decomposition removes wet chemistry.
• Contamination and mercury loss: fewer handling steps protect the sample.
• Memory effect after high samples: automatic cleaning restores the baseline.
• Weighing transcription errors: balance results import with one click.
• Staff time for routine batches: the 100-position autosampler runs overnight.