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photo of CDS 7400 AutosamplerCDS Model 7400 Autosampler

Soil and Water Modes

Product Specifications:

Tray Capacity:
0-999.9 minutes

Sample Weight:
as per method

Sample Volume:
based on sample loop

Operating Temperature:
15°C to 35°C

Relative Humidity:
10 to 90%

Line Voltage:
115 Vac ± 15%, 230 Vac ± 15%, 50/60 Hz ± 3 Hz

Soil Mode:

  • 72 position autosampler, with removable sample trays for 40 ml VOA Vials, 3 trays of 24
  • Internal Standard addition (2 µl) (soil samples require water addition)
  • Automated water addition in 5 ml aliquots (requires 5 ml sample loop)
  • Soil heater to 80°C
  • Magnetic stirrer (3 speed control)
  • The chemically inert sample pathways are made of PEEK®, Stainless Steel, glass, or electroformed nickel
  • Computer interface
  • Ability to change analysis matrix from tray to tray (manual or automatic options)

Water Mode:

Same as Model 7300


  • Pick and Place robotic arm
  • 3 removable trays (72 sample)
  • Water Station - for transfer of water to Purge and Trap
  • Soil Mode - includes sample heating and stirring for dynamic headspace
  • Internal standard reservoir
  • Chemically inert sample pathway
  • 5 ml water addition loop (behind the autosampler)
  • Removable pneumatics/plumbing tray (behind the autosampler)

CDS Analytical 7500 Thermal Desorption and 7400 Purge & Trap Autosamplers

CDS Analytical 7400 Purge & Trap Autosampler Operation

CDS Analytical Conversion of 7500 TD to 7400 P&T