Perlite 3-6mm (50 Litres, approx 4.5kg) desktop farm Great for environmental and agricultural

Great for environmental and agricultural testing

Complies To FDA Food Grade

ppt - International Oceanographic Tables

One is used for on/off and for calibration while the other is used to switch between the measurement modes

Perlite 3-6mm (50 Litres, approx 4.5kg) desktop farm Great for environmental and agriculturalNatural Expanded Volcanic Perlite is an ultra light mineral that improves soil structure. Low in density, its pocket of air keep soil from compacting around it, allowing roots to easily reach deeply into it. The Natural Expanded Volcanic Perlite is used to improve the drainage and aeration of any growing medium. The aerated soil drains water effectively, but retain enough moisture in itself for the root of the plant. Its high porosity makes it perfect