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Validation

FAQ | Validation
Question Answer
Why is the titrator slower than manual titration? During a titration, an electrode picks up measured values in a balanced state. The chemical reaction as well as the response time of the electrode must both(!) be waited for. This is the only way to get objective and correct titration curves with traceable results. A manual titration does not ensure this.
How high should the consumption be at the most during titration? We recommend a consumption of 25% to 75% of the burette volume. An attachment with a volume of 20 ml is used most often. Therefore, between 5 and 15 ml must be used.
Are there standard solutions, e.g. for chloride titrations, that I can use to check the measuring accuracy of the titrator? We recommend secondary reference material with a certificate issued by the manufacturer. This will include data regarding measuring uncertainty. NaCl is used for chloride titration. With a weight of approx. 58 mg (= 0.058 g), the consumption is approx. 10 ml for a 0.1 molar silver nitrate for solutions. You can also use KCl, but this is not available as reference material.
Why and how often should a titer determination be conducted? As a rule of thumb, a titer determination should be performed more frequently for diluted solutions. Alkalines are especially sensitive and the titer should be done at least once a week for those. Only the titer determination with a certified standard allows a correct result.