InfraCal model CVH



The InfraCal Model CVH is recommended for measuring oil in water, TPH in soil or FOG in wastewater concentration levels using the traditional EPA methods 413.2 and 418.1 or ASTM method D7066-04 and Freon-113, hydrocarbon-free grade of perchloroethylene, AK-225, S-316 or other spectroscopic infrared transparent solvent as the extracting solvent. Since the extract is deposited into a 10 mm quartz cuvette cell with Teflon stopper, light end volatile components are retained for measurement. Accurate down to 2 ppm. The Model CVH was one of the instruments used to develop the ASTM method D7066 oil in water method.  

If you plan to use the Model CVH with Tetrachloroethylene (Perchloroethylene), the only Tetrachloroethylene we have found that gives consistent results is from J.T. Baker "Ultra Resi-Analyzed" Tetrachloroethylene specifically made for trace hydrocarbon analysis by IR spectroscopy.


  • Minimum Detection Limit Water: 2 ppm
  • Minimum Detection Limit Soil: 10 ppm
  • Solvent(s): Perchloroethylene, S-316, Freon-113
  • Method Complies: ASTM D7066, EPA 413.2 & 418.1
  • Method Compares to EPA 1664, ISO 9377-2


  • Highlights

Instrument Type

Fixed Filter Infrared Analyzer, Model InfraCal CVH

Analytical Wavelength/Wave Number

3.4 µm, 2930 cm-1

Power Requirements

12 Volts DC, 2.0 amps, 12 Volt battery pack or adapter available

Power Supply

Universal AC/DC


4.5 lbs. (2.0 kgs)


6.5 x 6.5 x 5" (165 x 165 x 127 mm)

Suggested Operating Range

5°C - 40°C

Typical Useful Measurement Range:

For Water

2 - 1000 ppm

For Soil

200 - 5000 ppm

Analysis Time

10 - 15 minutes, including extraction process

Instrument Repeatability

+/-1 ppm

Communication Port

RS232 port, 9-pin D-Sub female, PC compatible

Suggested Solvents

Tetrachloroethylene (perchloroethylene), S-316, AK-225, Freon-113