Red Seas Copper test giving me unusual results

[rburns007@sbcglobal.net]

I'm treating one of my Quarantine tanks with Cupramine and I'm trying to test the copper levels with Red Seas copper test kit. I keep getting the color blue reading and the color blue is not one of the colors on the color card indicator. It has a green color at 0 and a dark purple color at .4

Any suggestions on why I'm getting the color blue??​

 

[water_baby83]

I don't use Red Sea brands too often (personally do not care for their lack of quality). However, I would first suggest calling their manufacturer and explaining to them what you are experiencing. Chances are, you are not the first who has experienced this, nor the last who will, so they might be able to explain it to you.