Calculated Factors:

Whitlock McMaster 3 X 0.3ml slide

The mean of two counts is recommended in calculating egg counts.
(click here to see the equation and general calculations to calculate eggs per gram from a worm egg count) 
  For 2g faeces in 58ml of flotation solution (2g:60ml)
Eggs 
1 strip 4 strips 1chamber 2 chambers 3 chambers
counted in
0.0375 ml
0.15 ml
0.3 ml
0.6 ml
0.9 ml
.
2g:60ml
Dilution
FACTOR x 800 200 100 50 33 1:30
.
. . . . . .
. For other dilutions:
2g:50ml x
667
167
83
42
28
1:25 *
4g:60ml x
400 100 50 25 17 1:15
* recommended generic dilution- para 9.1 of reference.
CSIRO Animal Production use 2gm:60ml total solution for simplest calculations

Reference:
Details about the techniques which use these slides may be found in the Section on Anthelmintic Resistance in Sheep (para 9.1 in particular) in
Australian Standard Diagnostic Techniques for Animal Diseases.  - ISBN 0 643 05243 7     636.0896075
developed through the Standing Committee on Agriculture and Resource Management,  Animal Health Committee,
Sub-committee on Animal Health Laboratory Standards
and published on their behalf by CSIRO Information Services, Australia.
 (Note that the recommended dilution is intended for the Whitlock Universal slide to give the simple Factor as above. Alternatives are permitted)

select here for 
Last Update: 16/06/99