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First Need XLE Integrity Test First Need XLE Integrity Test

First Need XLE Water Purifier Integrity Test

First Need XL Water Purifier Integrity Test

The "Blue Dye" Test

Pump coloured water through the canister as shown.

If the purified water is still coloured - even faintly - the internal canister matrix has most likely been damaged and the canister cannot be relied upon under this condition and must be replaced.*

* Note: Because the initial flow from a new purification canister may contain black "fines" from the manufacturing process, it is best to pump at least a litre of water before doing an integrity test to avoid posible confusion.

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