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Guaranteed 7-3-1 NPK nutrient ratio
No installation required
Measure EC or ppm
For best results
Coco Coir Mix Block
NORTH SPORE 4" Parafilm M Sealing Film & Petri Dish Tape Water Test Kits Guaranteed 7-3-1 NPK nutrient ratioNORTH SPORE 4" Parafilm M Sealing Film & Petri Dish Tape Dimensions 4" W x 125 ft L Autoclavable? No Parafilm M is a self sealing, semi transparent, flexible, odorless thermoplastic film that provides a waterproof barrier for covering laboratory vessels including petri dishes, jar lids, and more. It is gas permeable with low water permeability and ideal for use in culture applications as it does not affect oxygen or carbon dioxide permeability.
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