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NEW OPEN BOX RETURN - Brand New return, was returned with the GHL doser. Doesn't have a seal, but not sure they come with seals, but it's a full 500ml. SAVE 25%
GHL KH Director Reagent 500ml
: A 1000ml bottle of reagent can last for up to 3 months when testing is performed 4x per day at a KH value of 8.