Standard Practice for Determination of Soluble Residual Contaminants in Materials by Ultrasonic Extraction

Importancia y uso:

5.1 This practice is suitable for the determination of extractable substances that may be found in materials used in systems or components requiring a high level of cleanliness, such as oxygen systems. Soft goods, such as seals and valve seats, may be tested as received. Gloves and wipes, or samples thereof, to be used in cleaning operations may be evaluated prior to use to ensure that the proposed extracting agent does not extract or deposit chemicals, or both, on the surface to be cleaned.

5.2 Wipes or other cleaning equipment may be tested after use to determine the amount of contaminant removed from a surface.

Note 1: The amount of material extracted may be dependent upon the frequency and power density of the ultrasonic unit.

5.3 The extraction efficiency has been shown to vary with the frequency and power density of the ultrasonic unit. The unit, therefore, must be carefully evaluated to optimize the extraction conditions.

Subcomité:

G04.02

Referida por:

G0126-16R23, F2847-17, G0144-01R22, F2459-18, G0120-15R23, G0093_G0093M-19

Volúmen:

14.04

Número ICS:

19.020 (Test conditions and procedures in general), 71.040.50 (Physicochemical methods of analysis)

Palabras clave:

contaminant; contamination; extraction; nonvolatile residue; oxygen systems; total carbon (TC); ultrasonic extraction ;