Parameter

Unit

Analytical Method

1

Temperature

T

˚C

Mercury thermometer

2

pH

pH

No unit

Potentiometric

3

Electrical Conductivity

EC

µs/cm

Potentiometric

4

Dissolved Oxygen

DO

mg/L

Sodium Azide (Winkler)

5

Biochemical Oxygen Demand

BOD₅

mg/L

5-day Oxygen Consumption

6

Chemical Oxygen Demand

COD

mg/L

Potassium Dichromate Organic Matter Oxidation

7

Ammonium Nitrogen

NH₃

mg/L

Kjeldahl Distillation

8

Nitrates

${\text{NO}}_3^{-}$

mg/L

Brucine Sulfate (UV spectrometric)

9

Nitrites

${\text{NO}}_2^{-}$

mg/L

Sulphanilamide

11

Sulfates

${\text{SO}}_4^{2-}$

mg/L

Barium Chloride (UV spectrometric)

12

Phosphates

${\text{PO}}_4^{3-}$

mg/L

Vanadomolymphophosphoric Acid

10

Methylene Blue Active Substances

MBAS

mg/L

Methylene Blue

13

Total Coliforms

TC

NMP/mL

Multiple-Tube Fermentation Technique

14

Fecal Coliforms

FC

NMP/mL

Multiple-Tube Fermentation Technique