1merck

Qualitative test-papers (made by Macherey-Nagel) can measure :
Al³⁺, NH4⁺, Sb³⁺, As-combinations, H3BO3, borates, Bi³⁺, CN^-, Ag⁺, F^-, Cl2, K⁺, SO2, SO3^2-, H2S, S^2-, Co²⁺, Cr⁶⁺, Cr³⁺, Ni²⁺, NO3^-, NO2^-, O3, oil, Pb²⁺, peroxidase, Cu⁺, Cu²⁺, acidic phosphatase, Fe²⁺, Fe³⁺, blood, water containing in the carburants, water containing in an organic solvent, the distribution of the water in the butter.

Quantitative test-lines (made by Merck and Macherey-Nagel) can measure :
Al³⁺, NH⁴⁺, As³⁺, As⁵⁺, ascorbic acid, Ca²⁺, carbonate hardness, Cl^-, CrO4^2-, Co²⁺, Cu²⁺, CN^-, Ag⁺, H2CO3, Fe²⁺, F^-, Pb²⁺, Mn²⁺, Mo⁶⁺, Ni²⁺, NO3^-, NO2^-, H2O2, O^2-, PO4^3-, K⁺, SO4^2-, hardness, Zn²⁺.