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DR/2400
UniCell™ Vials
Scope and Application:
* Reagent sets for this method are only available in Europe.
Tips and Techniques
• Samples collected in glass or plastic bottles should be analyzed as quickly as possible.
• Adjust pH of preserved samples to between pH 3–5 with 1.0 N Sulfuric Acid Standard Solution before analysis.
• Clean the outside of the vial before placing it in the instrument. Wipe with a damp towel, followed by a dry one, to remove
fingerprints and other marks.
• Use the standard solution or standard addition method to verify results. See Accuracy Check.
• See Section 3.2.4 in the procedure manual for information on adjusting the calibration curve.
• The shelf life of test reagents can be extended to 24 months if kept at 4 °C (40 ° F).
• Make sure that the temperature of the water sample and the sample vial is between 15–25 °C (59–77 °F)
• Undissolved zinc and complexed zinc can only be determined after digestion using the Metal Prep Set (HCT 200). Total zinc
measuring range is 0.12 –7.20 mg/L.
• 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
809 Zinc, HCT 170
Touch
.
Start
Zinc_UniCell_Other_PAR_Eng_Ody.fm
For waste water, drinking water, surface water, raw water, and process control
2.
Pipet 4 mL of sample
into a sample vial.
3.
Pipet 0.4 mL of
Demasking Solution A
(HCT 170 A) into the
sample vial.
Zinc
(0.10 to 6.00 mg/L Zn*)
4.
Immediately cap
with an orange
UniCap 170 B.
Page 1 of 4
PAR
Zinc
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