New Triple-Chambered McMaster Counting Slides

McMaster Counting Slides Triple Chamber Design

McMaster Counting Slides Triple Chamber Design


The all-polycarbonate slide is more durable and appropriate for instructional & general environments.


Greater Sensitivity

The triple slide has 3 times the sensitivity of the standard 2-chambered slide. The multiplier is 8 times the number of eggs found in a fecal sample of one animal, versus 25 used with the standard 2-chambered slide, when a 26:4 ratio of floatation solution to feces is used. Thus if one egg is found, the resulting EPG is 8. (With the 2-chambered slide it would be 25 EPG). This may be important where very low egg counts are looked for.

Faster Multiple Fecals

Each chamber of the triple slide is the equivalent of a 2-chambered slide. Thus you may examine 3 different samples (of 3 different animals) under the microscope without having to “charge” 3 different 2-chambered slides.

All Polycarbonate
1 -4 $60
5- 9 $55
10 + $50


Slide size 1-7/16″ x 3″ (36 mm x 75 mm)
Grid size 1 cm x 2 cm (1 each over separate chambers)
Grid color green on polycarbonate
Volume under grid 0.30 ml
Material all polycarbonate

New Triple-Chambered McMaster Counting Slides

Chalex LLC
messages: 503.208.3831
f: 503.914.0379

For Mail Only:
340 SE 47th Ave.
Portland, OR 97215 USA