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Category: Generators | Subcategory: Gas Generator

Whatman 78-40 TOC Gas Generator

Whatman 78-40 TOC Gas Generator Image

ITEM: 32307 In Stock

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  • One Year Upgrade Available
  • Tested & Serviced Prior to Shipping

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The Whatman 78-40 TOC Gas Generator produces carrier/combustion gas from an existing compressed air supply for TOC instruments, eliminating the need to purchase expensive, inconvenient, high pressure cylinders of oxygen, air or nitrogen.

The Whatman 78-40 Gas Generator utilizes catalytic oxidation and pressure swing adsorption technologies to remove hydrocarbons to 0.1 ppm (measured as methane), CO2 to 1 ppm and water vapor to 1 ppm (-73°C dewpoint). The unit eliminates all the inconvenience and cost of cylinder gas supplies and outside costs.

The Whatman 78-40 TOC Gas Generator is a complete system with carefully matched components engineered for easy installation, operation and long term reliability. Installation consists of connecting a standard compressed air line to the inlet and connecting the outlet to the TOC gas supply line. Plug the generator into a standard electrical wall outlet and within minutes high purity carrier/combustion gas is supplied.


  • Replaces high pressure oxygen or nitrogen gas cylinders with hydrocarbon-free, CO2-free compressed gas for TOC analyzers.
  • Ensures consistent, reliable, TOC operation and significantly reduces instrument service and maintenance costs.
  • Compact design frees up valuable laboratory floor space.
  • Purity meets or exceeds all TOC manufacturers' gas purity requirements.


Maximum TOC Gas Flow Rate (outlet) at 7barg: 1.25 lpm
Outlet Hydrocarbon Concentration (as methane): 0.1 ppm
Outlet CO2 concentration: < 1 ppm
Dewpoint: < -73C
Inlet and Outlet Port Connections: 1/4" NPT (female)
Minimum/Maximum inlet Air Pressure: 4.5 barg/8.6 barg
Maximum Inlet Air Temperature: 25°C
Minimum Required Inlet Air Flow at 7 barg: 2.5 lpm (2500ml/min)
Maximum Inlet Hydrocarbon Concentration (as methane): 100 ppm
Pressure Drop at Maximum Flow Rate: 0.5 barg
Warm-up Time: 40 minutes
Power: 115V, 60Hz
Dimensions: 12" W X 17.5" D X 16.6" H (30.5 x 6.9 x 6.5 cm)

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