Salifert nitrate test

[JCM]

When reading the results from the top, should the vial be placed directly on the white card or should I hold it an inch or two above the white card? I get drastically different results depending on which method I use.

 

[Ponraj A]

When reading the results from the top, should the vial be placed directly on the white card or should I hold it an inch or two above the white card? I get drastically different results depending on which method I use.

when reading from top you have to keep the vial next to the colour chart fully and view from top.

 

[Ponraj A]

when reading from top you have to keep the vial next to the colour chart fully and view from top.

 

[JCM]

Thanks! So directly sitting on the card, got it

 

[VR28man]

Agreed with Ponraj A. Or, at least that’s how we interpret the instructions...... :D