| http://www.w3.org/ns/prov#value | - For a better solubility of the formazane formed from the tetrazolium salt added for removal of the disturbance and for increasing the reaction velocity of the reaction removing the disturbance, to the sample to be measured can optionally be added a non-ionic detergent, for example Triton X-100, Tween 80 or polyvinylpyrrolidone.
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