These nylon micron mesh squares are used for separating plankton from culture water and are a popular choice for DIY sieves. Made from strong, precision-moulded nylon, this mesh is reliable for filtration and well-suited to both larger plankton cultures and mechanical filter setups. Micron Guide 10 μm – Diatoms 50 μm – Rotifers 75 μm – Newly hatched brine shrimp 150 μm – Juvenile brine shrimp 350 μm – Adult copepods 400 μm – Sub-adult brine shrimp 520 μm – Adult brine shrimp