LRW (LAL Reagent Water) is defined as the water suitable for the LAL test, both for reconstituting and preparing reagents and for diluting the product under analysis:
Water for injectable preparation (WFI, Water for Injection), on the other hand, has an endotoxin limit of 0.25 EU/ml and cannot be used for reagent reconstitution or product preparation.
Since it forms the basis of the entire test, LAL water must be freshly opened and handled carefully to avoid contamination during sampling.
LAL water is used for the reconstitution of reagents (lysate and endotoxin), for the preparation of serial dilutions and positive controls, and for sample preparation.
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