InfraCal TOG/TPH Analyzers for Oil and Grease Measurements www.WilksIR.com

Portable Field or Lab Analyzer Results in < 30 seconds Rugged and Easy to Use Over 2000 in use worldwide today

Off shore oil rigs Refineries Industrial Wastewater Metal Parts Cleaning

Monitoring Using an Offsite Lab = Delayed Results

Monitoring Using an Offsite Lab Typical commercial laboratory turn around - two days to two weeks In-house hexane/gravimetric—several hours Results in the discharge of effluent above regulatory limit for extended time Add costs in time and dollars

Non Compliance The sooner the industry or regulating agency can detect non compliance The sooner the problem can be corrected

What is needed: A quick, accurate and simple field and/or in-plant analysis: Available with the InfraCal TOG/TPH Analyzer

Two different models available depending on desired measurement range and extraction solvent Model CVH Model HATR-T2

CVH HATR-T2 Minimum Detection Limit Solvent Component Measured   CVH HATR-T2 Minimum Detection Limit 2 ppm 8 ppm Solvent Perchloroethylene, Freon, S-316 hexane, pentane, Vertrel MCA Component Measured Measures all hydrocarbons Measures hydrocarbons with a boiling point higher than the solvent—volatile hydrocarbons will be evaporated along with the solvent. Instrument Repeatability +/- 1 ppm +/- 2 ppm Other Solvents are heavier than water and require a seperatory funnel or inverted vial with a septa cap to collect a solvent sample. Solvents are lighter than water and solvent sample can be collected from the top of the container.

Measuring Oil in Water with the InfraCal TOG/TPH Analyzer Acidify sample to pH of 2 Add 10 ml solvent to 100ml sample (10 to 1 ratio) Shake for 2 minutes A portion of the solvent is presented to the analyzer for analysis

Basic Measurement Concept Infrared Analysis: Hydrocarbons have a characteristic absorbance in the infrared region: 2930 cm-1 or 3.4 microns

Spectrum of a hydrocarbon (red) Overlaid with a 3.4 micron filter (black)

Infrared Absorbance The amount of energy absorbed is proportional to the amount of oil/grease in the sample: A higher oil and grease concentration has a higher infrared absorbance A lower oil and grease concentration has a lower infrared absorbance

The Measurement of Oil using Hexane Model HATR-T2

The hexane evaporates leaving an oil film on the crystal

Infrared light (source) is focused on the end of the crystal

The infrared light reflects off the surface of the crystal

At each reflection, the infrared light penetrates into the oil film and is absorbed by the oil at 2930cm-1 Infrared light Oil Film

The infrared light is focused on to a detector containing a 2930cm-1 filter

A higher oil and grease concentration has a higher infrared absorbance A lower oil and grease concentration has a lower infrared absorbance

Preset timer allows hexane to evaporate After timer countdown and 15 second run time Value is displayed

Cleaning the Trough Crystal Add enough solvent to cover crystal Wipe slowly across the crystal

The whole analysis, from sample Analysis Procedure The whole analysis, from sample collection to final result, takes under 15 minutes An operator with minimal training can do the analysis

* the upper limit can be extended by dilution Measurement Range Hexane extraction: 10- 300 ppm* * the upper limit can be extended by dilution

Repeatability of the Hexane/Infrared Method Repeated runs on same sample: + 01 Independent applications of sample: + 02 Independently prepared samples: +03* * Repeatability is dependent on how carefully the analyst does the extraction

The Measurement of Oil using S-316 or Perchloroethylene Model CVH

ASTM Infrared Oil and Grease Method to replace Freon/IR Method ASTM Method D7066-04: Standard Test Method for dimer/trimer of chlorotrifluoroethylene (S-316) Recoverable Oil and Grease and Nonpolar Material by Infrared Determination

ASTM Method D 7066-04 Uses a transmission cell - Model CVH Measures volatile constituents

The Measurement of IR Absorption of an Oil Sample with a Cuvette InfraRed light passes through the cuvette filled with solvent from the sample extract

The infrared light is focused on to a detector containing a 2930cm-1 filter The amount of IR energy absorbed by the sample correlates to the concentration of oil and grease in the sample

Cuvette is filled with solvent extract

Cuvette is placed in the analyzer After 30 seconds, Oil and Grease value is displayed

* the upper limit can be extended by dilution Measurement Range S-316 or Perchloroethylene: 2 -300 ppm* * the upper limit can be extended by dilution

Repeatability of the S-316 or perc/Infrared Method Repeated runs on same sample: + 01 Independent applications of sample: + 01 Independently prepared samples: +02* * Repeatability is dependent on how carefully the analyst does the extraction

Comparing Different Analytical Procedures

Oil and Grease Not a unique chemical entity A mixture of chemical species that vary from source to source It is defined by the analytical procedure, ie: infrared, gravimetric, GC/FID

Comparing Different Analytical Procedures Infrared Gravimetric Gas Chromatograph/Flame Ionization Detector (GC/FID) Ultra Violet Each method measures different physical properties

Gravimetry Ultra Violet What is Measured What is Not Measured Technology Infrared All analytes removed from the samples by the extraction solvent that contain a C-H stretching absorption. All analytes removed from the sample by the extraction solvent that are not volatilized. All analytes removed from the sample by the extraction solvent that can be chromatographed and that respond to the detector. Aromatics only Very polar organics Volatiles Very polar or involatile compounds depending on choice of column, temperature program, time, etc. Aliphahtics Gravimetry GC/FID Ultra Violet

Note: Ultraviolet (UV) measures only the aromatic hydrocarbons in a water sample. If the aromatic/ aliphatic ratio changes, the reading will not be correct. Infrared measure both the aromatic and the aliphatic hydrocarbons.

Comparison of Hexane/Infrared and Hexane/Gravimetric Meat Packing Plant Infrared Gravimetric Sample 1 67 ppm 70 ppm Sample 2 1990 2020 After Grease Trap at a Restaurant Sample 1 423 415 Sample 2 332 300 Sample 3 103 130 Sample 4 157 170 Sample 5 67 74

Same Samples, Three Different Laboratories InfraCal     InfraCal        Lab 1           Lab 2 Lab 3 Wilks         Customer   51      49 67              23 51 62              61             74               43 47 71              --              76               70 49 63             53             66                 55 40 3                1               14                7 <5

Using this simple and quick infrared procedure, operators of a pretreatment system can: Quickly and easily assess their system’s efficiency Take samples before and after treatment Change their system’s parameters and immediately test the results of their changes See how their system functions under heavy loads Avoid discharging effluent that is above the regulatory limit

Oil and Grease Analysis with the InfraCal TOG/TPH Analyzers For questions or more information: info@WilksIR.com 203-855-9136 www.WilksIR.com