HI3820 CTK Acidity
HI3820 CTK Acidity
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Product information "HI3820 CTK Acidity"

With the use of diluted sodium hydroxide as the titrant and bromphenol blue or phenolphthalein indicators, the contribution of strong or organic acids can be determined. The measurement of the strong acid contribution to the sample acidity is known as methyl orange acidity. This is carried out by titrating with sodium hydroxide until the solution turns from yellow to green/blue (pH endpoint about 4.5). The total acidity caused by both mineral and organic acids is determined by titrating to an endpoint pH of 8.3, using phenolphthalein as an indicator. This is known as phenolphthalein inacidity.


Order Information:
HI 3820 test kit comes with 10 mL dechlorinating reagent, bromophenol blue indicator, phenolpthalein indicator, acidity titrant, 10 mL calibrated vessel, 50 mL calibrated vessel, and calibrated syringe.

Product Manuals

  Manual: Download

Method   Titration
Range   0-100 mg/L
0-500 mg/L
Smallest Increment   1 mg/L
5 mg/L
Chemical Method   Methyl-orange/Phenolphthalein
Number of Tests   approx. 110
Weight   910 g



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