X

#### Xman

**MSA Studies**

I am trying to make sure that I have all of my MSA studies covered off before my next QS9k surveillance audit next month. This includes linearity, bias, stability, etc, etc.

One are I am having trouble is with a scale that is used in the calculation of Specific Gravity (SG). I have the scale set-up with a side attachment that allows me to weigh in water. I weigh a piece of material in air, then in water, then calculate the SG. The SG must then be within a specified range.

For example let's say SG must be between 2.15 to 2.43

Lets say the part measured 356 gm in air and 209 gm in water

That is an SG of 2.42

Now, given that I have 7 different SG specs for 7 different materials, each of which have hundreds of part number variations, can I calculate Linearity for the scale being used???