Hard time reading Phosphate test color

[windowlicker916]

The color is a very light blue almost clear.

Which i don't see on the chart. Doesn't look like the 0 reading and it doesn't look like the 5 reading.

Anyone point this out for me?

[Randy Holmes-Farley]

Telling us what kit you are using might help. ;)

[windowlicker916]

My apologies.

API

[JamesJR]

I never could read any of these liquid test kits myself. I've been very tempted to tinker around with an old spectrophotometer I've got laying around in my lab.

[Randy Holmes-Farley]

Sorry, I've not used that kit to say much about the colors. Generally, you interpolate as best you can between colors, but if you see any blue, you likely have more phosphate than you want. :)