Nutrient pads Sterile, dehydrated culture media pads in petri dishes. Once they are moistened with 3.0ml to 3.5ml of sterile and demineralised (or distilled) water they are ready-to-use immediately. All Nutrient Pad sets are supplied with the appropriate membrane filters, which are also individually sterile packed. Shelf life of the NPS 18 to 24 months at room temperature. Alternative nutrient media are available on request.
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