Hi,
formula look Ok, check if in the data is left out you don't have any spaces,
test something, from the data id being picked up copy the work and the number
from there and see what happens if that doesn't solve your problem could you
post an example

"Tmt" wrote:

I used this formula to calculate the number of items being serviced in any
particular department from another worksheet. It counts most of my data but
leave out some. Please help. Thanks.

=SUMPRODUCT(('Q1 '!E13:E136="calibrated")*('Q1 '!G13:G136="70223"))
=SUMPRODUCT(('Q1 '!E13:E136="calibrated")*('Q1 '!G13:G136="74532"))
=SUMPRODUCT(('Q1 '!E13:E136="calibrated")*('Q1 '!G13:G136="74533"))