Allkalinity Pro Test Kit

[jose7878]

I bought the Red Sea Alkalinity Pro Test Kit . The problem that I'm having is that I can't get a correct reading. When I add the first drop of alkalinity titrant it turns blue ,I proceed to add a drop at a time so it turns purple but instead it turns yellow it never gets to the end point Which is Purple.

If anyone else uses this test kit can you help me ?

 

[Tank2379]

Are you sure it's not a Seachem Basic Marine test kit?

 

[jose7878]

No . It's the Red Sea .