Independent analytical testing. Results apply only to the sample received, for research use only.

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Maximum valid dilution

Seen on endotoxin method statements.

Definition

The greatest dilution at which a sample can still be tested and remain capable of detecting endotoxin at the stated limit. Diluting past it makes a pass meaningless.

Related terms

Bacterial endotoxin
A lipopolysaccharide component of Gram-negative bacterial cell walls, measured because it is heat-stable and survives processes that kill the organism itself.

About contaminant testing

Endotoxin and elemental impurities, what neither of them establishes, and the microbiological vocabulary a reader still meets elsewhere.

Endotoxin unitPositive product controlTAMC and TYMCColony-forming unitSterilityElemental impurityMethod blank

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