Urea T / M390
ENMethod Reference Book1.06
EN
Urea T M390
0.1 - 2.5 mg/L Urea Ur1
Indophenol / Urease
Material
Required material (partly optional):
Reagents Packaging Unit Part Number
UREA Reagent 1 15 mL 459300
UREA Reagent 2 10 mL 459400
Ammonia No. 1 Tablet / 100 512580BT
Ammonia No. 1 Tablet / 250 512581BT
Ammonia No. 2 Tablet / 100 512590BT
Ammonia No. 2 Tablet / 250 512591BT
Set Ammonia No. 1/No. 2 100 Pc.#100 each 517611BT
Set Ammonia No. 1/No. 2 250 Pc.#250 each 517612BT
Ammonia Conditioning Powder Powder / 26 g 460170
Urea Pretreat (compensates for the interference
of free Chlorine up to 2 mg/l)
Tablet / 100 516110BT
UREA Reagent Set 1 Set 517800BT
Preparation
1. The temperature of the sample should be between 20 °C and 30 °C.
2. The analysis must take place within one hour after taking the sample at the latest.
3. With the analysis of sea water samples, before the addition of Ammonia No. 1
Tablet, twoscoops of ammonium conditioning powder must be added to the sample
and dissolved by swirling.
Remarks
1. The AMMONIA No. 1 tablet will only dissolve completely after the AMMONIA No. 2
Tablet has been added.
2. Ammonium and chloramines are accounted for in the urea determination.