EPA Method 160.4

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EPA Method 160.4:
Volatile Residue by Muffle Furnace. Official Name: Residue, Volatile (Gravimetric, Ignition at 550 oC)

Summary:
The residue obtained from the determination of total, filterable or non-filterable residue is ignited at 550oC in a muffle furnace. The loss of weight on ignition is reported as mg/L volatile residue.

Scope:
This method determines the weight of solid material combustible at 550oC. The test is useful in obtaining a rough approximation of the amount of organic matter present in the solid fraction of sewage, activated sludge, industrial wastes, or bottom sediments.

Citation:
Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020)

Interferences:
None.

QC Requirements:
None.

Maximum Holding Time:
7 days (MCAWW, Table 1).

Media:
WATER

Subcategory:
Inorganic

Concentration:
Not Available.

Sample Prep:
None.

Precision:
Precision was determined in a collaborative study involving three laboratories examining four samples by means of ten replicates.

Detection:
None.

Revision Number:
Issued 1971

Test Description:
Residue, Volatile 60

Instrument used for this test:
Balance