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DR/2400
UniCell™ Vials
Scope and Application:
* Reagent sets for this method are only available in Europe.
Tips and Techniques
• Clean the outside of the vial before placing it in the instrument. Wipe with a damp towel, followed by a dry one.
• Use the standard solution or standard addition method for a proof of accuracy. (See Accuracy Check).
• See 3.2.4 on page 40 for information on calibration curve adjustment.
• Underrange appears on the display when the instrument is zeroed or when the determined sample concentration is below the
operating range listed for this method.
UniCell Vials
Hach Programs
1.
Touch
.
Hach Programs
Select program
807 Nitrite, HCT 116
Touch
.
Start
Nitrite_UniCell_Low_DAZ_Eng_Ody.fm
For water, wastewater, and seawater
2.
Pipet 4.0 mL of
sample into a sample vial.
(0.020 to 0.600 mg/L NO
3.
Immediately screw a
green UniCap A
(HCT 116 A) onto the
sample vial.
Close the UniCap bottle
immediately after use.
Nitrite
Diazotization Method*
–
–N)
2
4.
Invert the sample vial
repeatedly until the
reagent in the cap is
completely dissolved.
Nitrite
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