Cadmium; Cadion Method; Unicell™ Vials; (0.02 To 0.30 Mg/L Cd) - Hach DR2400 Manual

DR/2400
UniCell™ Vials
Scope and Application:
Tips and Techniques
• Adjust the pH to between 3–6 with 5.0 N Sodium Hydroxide Standard Solution before analysis.
• Clean the outside of the vial before placing it in the instrument. Wipe with a wet towel, followed by a dry one.
• Use the standard solution or standard addition method to verify results. See Accuracy Check on page 3.
• See Section 3.2.4 in the procedure manual for information on adjusting the calibration curve.
• Make sure that the temperature of the sample and the reagents is between 15–25 °C.
• 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
.
815 Cadmium, HCT 154
Touch .
Start
Cadmium_UniCell_Other_CAD_Eng_Ody.fm
For wastewater process control
2.
Pipet 10.0 mL of
sample into the reaction
tube (red cap).
3.
Pipet 1.0 mL of
Complexing Solution A
(HCT 154 A) into the
reaction tube.

Cadmium

Cadion Method

(0.02 to 0.30 mg/L Cd)

4.
Close the reaction
tube and invert several
times to mix.
Cadmium
Page 1 of 4