ASTM D7066 PDF

Doukora A fresh spiking solution should be prepared weekly or bi-weekly. For single-beam and infrared? Other grades may be used, provided it is? If the sample is to be shipped by commercial carrier, U. One laboratory disposed of its samples before performing the non-polar analysis.

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Gukree Drain and clean the sample cell. It is highly recommended that calibration standards be prepared on a weight basis i.

The test blank must be taken through all of the steps of the analytical method including sample preservation and pretreatment. In accordance with Section 1. Due to the cost of performing the analysis, each matrix tested contained only one set of Youden pair concentrations. ASTM D This test method contains procedures that can assist the analyst in breaking such emulsions.

Scan as in If a ashm measurement is required, individual grab samples collected at prescribed time intervals may be analyzed separately and the concentrations averaged. D sure to record the concentration added to each replicate. NOTE 8—The amount of silica gel needed has been estimated at 3 g for every mg of polar material.

A nearly horizontal, straight line should be obtained. ASTM D — standard test method by Infrared Determination This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

D — 04 any sample preservation and pretreatment steps. Use the entire sample because removing a portion would not apportion the oil and grease that adheres to the bottle surfaces.

A solution containing equal volumes of isooctane and octanoic acid will have a density of 0. If a sample is encountered that exceeds the calibration range, dilute the sample extract to bring the concentration into the calibration range. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine D Guide for Good Laboratory Practices2 the applicability of regulatory limitations prior to use. Each replicate must be taken through the ashm analytical test method including 5 Other labs used AK with no issues, indicating the use of AK is dependent on the type and model of IR instrument used.

The value obtained must fall within the control limits speci? Under these circumstances, one of the following remedies must be employed: If linearity cannot be achieved past a certain concentration, consider that concentration the upper bounds of the calibration and r the calibration standards accordingly. D not exceed 50 mL of total solvent during the extraction and rinse procedure.

The data presented here is for reference or information only and may be useful if another interlaboratory method validation study is performed. The volume should always be greater than 1? The nonpolar material is measured by infrared spectroscopy. Rinse the tip of the separatory funnel, Na2SO4,? If not, check cells for cleanliness, matching, etc. For single-beam and infrared? Current edition approved June 1, If the IR instrument cannot be calibrated to 0.

If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee d Standards, at the address shown below. A number in parentheses indicates the year of last reapproval. The LCS can be the standard spiking solution To assure the most accurate concentrations, use the smallest serological pipet or syringe for measurements.

Be sure to record the concentration added to the LCS. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

If emulsion forms between the phases and the emulsion is greater than one-third d volume of the solvent wstm, the laboratory should employ emulsion-breaking techniques to complete the phase separation. L of octanoic acid by the water volume in liters. L for solution density of 0. Be sure to record the concentration of oil and grease and non-polar material added. Alternatively, solid-phase extraction SPEcontinuous liquid-liquid extraction, or other extraction techniques may be used to prevent emulsion formation.

L of isooctane by the water volume in liters. D 4—For infrared instruments having computer capability, data may be obtained automatically or as described in Similarly, this test method de? Take care to avoid insertion of the cell stopper so tightly that the cell could burst from expansion of its contents as it resides in the light beam.

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ASTM D7066 PDF

Gukree Drain and clean the sample cell. It is highly recommended that calibration standards be prepared on a weight basis i. The test blank must be taken through all of the steps of the analytical method including sample preservation and pretreatment. In accordance with Section 1.

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A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Scope 1. Included in this estimation of oil and grease are any other compounds soluble in the solvent. Similarly, this test method denes nonpolar material in water and wastewater as that oil and grease which is not adsorbed by silica gel in the test method and measured by IR absorption at cm It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine D Guide for Good Laboratory Practices2 the applicability of regulatory limitations prior to use. Referenced Documents 2.

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ASTM D7066 - 04(2017)

Tojak Of those measured, certain ones may be adsorbed by silica gel while others may not. Weighing will be more accurate. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. It is highly recommended that calibration standards be prepared on a weight basis i.

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ASTM D7066-04 PDF

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