3.3. TOC Determination
TOC analysis were carried out using Hach Lange Cuvette test (LCK 386) as follows: 1.0ml of sample was
pipetted into the digestion cuvette, which then inserted open in the TOC-X5 shaker for five minutes. When the
sample preparation is completed, the indicator cuvette with membrane double cap was tightly screwed on the TOC
cuvette, and then digested at 100 °C for 120 min, then allowed to cool, cleaned and evaluated