How to Choose a Nitex Mesh Size
How to Choose a Nitex Mesh Size:
Choosing the right Nitex (nylon monofilament) mesh size depends primarily on particle size, flow rate, and the open area ratio (OAR). Nitex is widely used for liquid filtration, plankton sampling, and aquaculture, and is selected based on the following three criteria:
1. Determine Your Micron Rating
Nitex mesh size is measured in microns (μm).
- Rule of Thumb: Anything larger than the micron size will be caught; anything smaller will pass through.
- Particle Separation: Always choose a micron size slightly smaller than the smallest target particle you want to trap, or slightly larger than the largest particle you want to pass.
2. Balance Flow Rate and Open Area
- High Flow Rate/Low Clogging: Choose a mesh with a high opening percentage (50% or higher). This allows for maximum water or air volume to pass through.
- Low Flow Rate/High Accuracy: Choose a tighter mesh with a lower opening percentage. Note that this increases pressure drop and can cause the filter to clog faster.
3. Match Your Specific Application
Select your ideal micron range based on what you are filtering:
- 20–50 μ m: Extremely fine filtration. Best for retaining micro-algae or catching small rotifers.
- 80–150 μ m: Standard plankton and invertebrate collection.
- 200–500 μ m: Brine shrimp (Artemia) culture, separating larger larvae, and general debris straining.
- 1000+ μ m: Coarse separation, large particulate trapping, and custom heavy-duty strainers.
