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ASTM D3237 Test Method for Lead In Gasoline By Atomic Absorption Spectroscopy
ASTM D3237 Test Method for Lead In Gasoline By Atomic Absorption Spectroscopy3. Summary of Test Method3.1 The gasoline sample is diluted with methyl isobutyl ketone and the alkyl lead components are stabilized by reaction with iodine and a quaternary ammonium salt. The lead content of the sample is determined ...
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ASTM D3237 Test Method for Lead In Gasoline By Atomic Absorption Spectroscopy
ASTM D3237 Test Method for Lead In Gasoline By Atomic Absorption Spectroscopy1. Scope1.1 This test method covers the determination of the total lead content of gasoline within the concentration range of 0.010 to 0.10 g of lead/U.S. gal (2.5 to 25 mg/L). This test method compensates for variations in ...
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ASTM D3228 Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By M
ASTM D3228 Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By Modified Kjeldahl Method10. Precision and Bias10.1 Precision:10.1.1 For Lubricating Oils - The precision of this test method as obtained by statistical examination of interlaboratory test results is as follows:10.1.1.1 Repeatability ...
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ASTM D3228 Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By M
ASTM D3228 Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By Modified Kjeldahl Method8. Procedure8.1 Transfer 1.0 to 1.5 g of sample, weighed to the nearest 0.1 mg, into a Kjeldahl flask. Avoid contact of the sample with the neck of the Kjeldahl flask. Add the catalyst reagent mixture ...
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ASTM D3228 Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By M
ASTM D3228 Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By Modified Kjeldahl Method5. Apparatus5.1 Buret, 50-mL, graduated in 0.1-mL subdivisions, one for each titrant. Other size burettes may also be used.5.2 Flask, Erlenmeyer, 300-mL. Other sizes are also acceptable.5.3 Heater, ...
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ASTM D3228 Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By M
ASTM D3228 Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By Modified Kjeldahl Method3. Summary of Test Method3.1 The sample is digested in a mixture of concentrated sulfuric acid, potassium sulfate, mercuric oxide, and copper sulfate. After digestion, sodium sulfide is added to precipitate ...
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ASTM D3228 Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By M
ASTM D3228 Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By Modified Kjeldahl Method1. Scope1.1 This test method is applicable for the determination of nitrogen in lubricating oils when present in the concentration from 0.03 to 0.10 mass %, and for the determination of nitrogen in ...
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ASTM D3244 Standard Practice for Utilization of Test Data to Determine Conforman
ASTM D3244 Standard Practice for Utilization of Test Data to Determine Conformance with Specifications10. Acceptance or Rejection of Product10.1 If the ATV is equal to or better than the AL limit, the product is to be accepted as having met specification.10.2 If the ATV fails the AL value, the product ...
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ASTM D3244 Standard Practice for Utilization of Test Data to Determine Conforman
ASTM D3244 Standard Practice for Utilization of Test Data to Determine Conformance with Specifications8. Obtaining the Assigned Test Value (ATV)8.1 The following procedure will produce an ATV with precision control based on the reproducibility of the test method.8.2 The receiver and supplier should obtain ...
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ASTM D3244 Standard Practice for Utilization of Test Data to Determine Conforman
ASTM D3244 Standard Practice for Utilization of Test Data to Determine Conformance with Specifications6. Applying Precision Data to Test Methods6.1 This section describes procedures in which the precision limits of test methods may be used to indicate when results obtained by two laboratories differ ...
