The hydrophobic coating delineating the circles on these slides permits rapid smearing of 0.01 ml of milk over an exact 1 cm2 area. In fact, you can actually turn the slide upside down and the milk remains in place! Plus, you can write on the hydrophobic coating with just about anything - pencil, pen or marker.

The slides have 4 hash marks per circle indicating the exact beginning and ending points for true horizontal and vertical diameter strip counts. These indicator marks eliminate the need to search for your beginning point - the horizontal or vertical apex of each circle. Simply locate the indicator mark and begin counting - confident that you are counting along the diameter!

According to leading dairy QC professionals, incorrect identification of the circle’s diameter is the primary source of error in strip counting. Our new slide eliminates this source of error and will enable you to achieve repeatable counts from one operator to another. Ideal for calibration of optical analyzers.