Sedgwick Rafter Counting Cells

Gridded Sedgewick Rafter simple design of surprising accuracy commonly used for counting larger plankton. Recommended for its ease of use and reproducible data. Intended for use with either a standard or inverted compound microscope at low magnifications, it limits magnification to about 200 x,
Specifications:
• Frame: brass, mounted on 1" x 3" glass slide.
• Cell size: 50 mm x 20 mm x 1 mm
• Cell volume: 1.0 mL
• Includes: 2 cover glasses, plastic case.
• 1801-G20 Gridded model includes 1mm x 1mm grid etched on slide with 1 microliter of fluid per gridded square

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