Graticules: Sedgewick Rafter Counting Chambers

These cell are made of high quality optical glass with a chromium surface image, intended for continued professional use and whenever using phase contrast. Used widely in water analysis, culture inspection and for other applications where particles per unit volume in fluid must be determined. Trust Graticules for the highest quality, reusable, premium counting cells.

S50 Plastic Counting Cell

An economically priced cell, for one time (or possibly several time) use and for educational/training exercises. Generally we do not recommended the S50 plastic version for the professional user. The softness of the plastic means it is easily scratched and otherwise damaged. However most laboratories who do use the plastic version see it more as a “throw away” or consumable, which may best suit certain applications.

Pattern: S50

Order Code: 02C00415
Description: Plastic Sedgewick Rafter Counting Chamber
Key features: Sedgewick Rafter Counting Chamber in Plastic. Includes 1 cover glass
Overall Dimensions: 76mm x 40mm x 2mm thick
Chamber Dimensions: 50mm x 20mm x 1mm deep
Volume: 1ml

S52 Glass Counting Cell

A serious reusable tool for the professional user. The cell is made of high quality optical glass with a chromium surface image. It is intended for continued professional use and whenever using phase contrast.

Pattern: S52

Order Code: 02B00417
Description: Glass Sedgewick Rafter Counting Chamber
Key features: Sedgewick Rafter Counting Chamber in Glass. Includes 1 cover glass
Overall Dimensions: 76mm x 40mm x 2mm thick
Chamber Dimensions: 50mm x 20mm x 1mm deep
Volume: 1ml

S53 Plain Glass Counting Cell

Reusable tool for the professional user. For many applications, particularly where larger plankton are being analysed, there is no requirement for a counting grid printed onto the slide, hence the introduction of this slide with a plain glass base. This chamber can be used with either upright or inverted microscopes.

The S53 can be used in conjunction with an eyepiece reticle, such as a Whipple grid (NE29), where detailed counting/sizing is required.

See also: Bogorov counting chambers.

Pattern: S52

Order Code: 02B00418
Description: Plain Glass Sedgewick Rafter Counting Chamber (No Grid)
Key features: Sedgewick Rafter Counting Chamber in Glass. Includes 1 cover glass
Overall Dimensions: 76mm x 40mm x 2mm thick
Chamber Dimensions: 50mm x 20mm x 1mm deep
Volume: 1ml

S51 Spare Coverglass

Suitable for S50, S52 and S53

Pattern: S51

Order Code: 02C00416
Description: Spare Coverglass
Key features: Coverglass for Sedgewick Rafter Cells S50, S52 and S53

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