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Gas Chromatograph

GC column: DB-1, 0.32 mm ID, 30 m, 4.0 μm df or equivalent

Valves: Stainless steel body/Teflon diaphragm

Heated zones – maximum temperature: Three independent heated zones:

• Column 200°C

• Valves 60°C

• Detector oven 110°C

Temperature programmable column module: 55–200°C

Carrier gas: Argon 99.999% @ 414–689 kPa (60–100 psi)

Variable column pressure control: Regulator pre-set to 90 psi

Sample inlet: Continuous water monitoring SituProbe (dynamic purge and trap)

Concentrator: Tri-Bed

Micro Argon Ionization Detector (MAID)

Sensitivity: 0.5 ppb benzene in water, s/n >200:1; 0.5 ppb MTBE in water, s/n >15:1

Ionization source: Ni-63 2.4 mCi

Repeatability: Five replicates of 1 ppb benzene: RSD calculated <5%

Temperature: 110°C (maximum)

Dynamic range: Three decades

Detection limit: ppb to ppt for most analytes

Physical Operating Requirements

Size: 43 x 83 x 26 cm (16.9 x 32.7 x 10.2 in.)

Weight: 25 kg (55.1 lb.)

Power requirement:100–240 V (ac) 200 watts maximum

Temperature: 5–45°C

Relative humidity: 5–95%


The CMS5000 is a GC-based system that autonomously samples VOCs in water, quantifies contaminant levels and automatically alerts users if thresholds are exceeded.



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