Ward Counting Wheel
• Easy, simple way to count zooplankton
• Clear PVC construction designed for use under a binocular dissection microscope (low power stereoscope)

This durable device provides an accurate, simple way to count zooplankton, as referenced in Standard Methods. Precision-made of clear plastic for easy cleaning and durability. comes with a 4” square acrylic base.

With clear PVC, you can use an alcohol preservative. It is slightly blue tinted and resistant to alcohol.