Natural Rock Sample

$400.00

In stock

How many RAD7s?

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Description

Natural Rock Sample

Monitor RAD8 or RAD7 performance once a month

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The Natural Rock Sample system consists of a 21oz (600g) sample of granite gravel from a stone quarry, normally sold by the truckload as construction material. It is enclosed in a container that, by closing two ball valves, may be completely sealed.