KH STANDARD / 4 dKH
KH Standard / 4 dKH (lab certified analytical standard 4 dKH) can be combined with pH indicator (Bromothymol Blue) to create the necessary and appropriate solution to accurately measure CO2 levels in the aquarium. The KH standard / 4 dKH needs to be combined with 2 - 4 drops of pH indicator in your drop checker until a strong transparent blue color is acheived.
- Size: 1.25 oz (37 mL)
$2.99
In Stock
Item 106925
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