Ward Zooplk Cntg Whl Pvc 4" Sq.

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.