LaMotte Nitrate Test
I recently purchased a LaMotte test kit to test the nitrate levels in my tank. I have not created a reference solution as yet so I cannot speak to it's accuracy. However, I do have a question about exactly what the test measures. I followed the process and according to the color scale the Nitrate level in my tank was 4 ppm. Here's where I get confused and unsure of myself. The instructions say that measurement is for N-NO3 and that I need to multiply that figure by 4.4 to get the reading for NO3.
So I'm looking for some confirmation from someone smarter than me. Based on the above, are my nitrates at 17.6 ppm (4 x 4.4)? Thanks!