API copper reading

[coweyes298]

Can someone help me identify the API copper reading? This is coppersafe dosage. I have Chematric kit and it is reading at a hair over 2 ppm. I want to do a sanity check with API but still, I am color blind with API kit. Attached is the photo.

 

[Smo]

Not all agree but I like to raise the vial 1/2” or so above the white card stock in bright light to take my reading. It should be really close to 2.0.
The instructions are not clear.

 

[Humblefish]

Looks very close to 2.0 ppm from what I can see