How to use Ward Counting Wheel

1. Place under a binocular dissection microscope in such a way that the groove is directly under the object lens.
2. Place a 5 to 10 mL sample in the trough.
3. The sample channel has a small plastic divider placed across the groove at one point to mark the start and finish of the count.
4. The plankton are counted as the wheel is rotated.
5. To maintain, wash with mild soap and soft water. Rinse completely with distilled water before drying. To remove surface scratches, buff gently with mild abrasive and soft flannel buffer, then wash as directed.

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