Thanks for posting that.
Anything else in the ISO specs to be aware of. I suspect the spectrum of the EG&G is compatible. How about exposure duration, are you using 1/1000? How do they specify the developer, brand name or composition? Is there an allowable deviation or +/- range in the standard?

How much do you think this affects gamma? For a routine development time control strip, OK to fire off the test strip and process right away?

Last and OFF TOPIC: You are one of the few here that has sent their EG&G to be measured/calibrated. When you do an ISO test and the results differ from the box speed what is your response? Calibration off? Error in testing conditions? Bad film? or "I wouldn't even try to exactly duplicate ISO conditions"