Resource Testing my SN using the aquarium testing strips

[pedro3211]

I received the 2nd SN bottle today, because I ordered SN from 2 different sellers. So, this is the second time testing the SN using the aquarium testing strips, and decided to document and share the test results this time. I understand that the test is not highly accurate. But, I'm satisfied with the results, and I think it's good enough for our purpose.

1. Prepare 2 cups with 500mL of distilled water each. I didn't find 1L distilled water bottles in nearby stores. So, I recalculated the test based on 2 x 500mL.
View attachment 26592


2. Weigh 2.5g of SN
View attachment 26593


3. Dissolve the 2.5g of SN in cup1. Then, take 1mL from the cup1 and add it to cup2.
View attachment 26594


4. Now, we have 2.5g/500mL or 5g/L in cup1, and 10mg/L in the cup2. This picture actually the same as picture 1. Just distilled water. I reused it to explain this step.
View attachment 26595


5. Use the testing strips to test for Nitrite. We need the concentration of Nitrite in cup2. But, I tested both for comparison. I think the result is close to 10mg/L. Which is good.
View attachment 26596

6. Here is a closer look of the testing strip next to the color chart.
View attachment 26597

What strips did you use? Will any strips work? Does the "PPM" change anything etc?