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DR/2400
Method 8326
Powder Pillows
Scope and Application:
* Adapted from Standard Methods for the Examination of Water and Wastewater.
Tips and Techniques
• For more accurate results, determine a reagent blank value for each new lot of reagent. Follow the procedure using deionized
water in place of the sample. Subtract the reagent blank value from the final results or perform a reagent blank adjust
instrument manual for more information on Running a Reagent Blank.
• Clean all glassware with 6.0 N HCl and deionized water before use to remove contaminants from the glass.
• The sample temperature must be between 20–25 °C (68–77 °F) for accurate results.
• Wipe the outside of sample cells before each insertion into the instrument cell holder. Use a damp towel followed by a dry one to
remove fingerprints or other marks.
Powder Pillows
Hach Programs
1.
Touch
Hach Programs.
Select program
9 Aluminum, ECR.
Touch
Start.
Aluminum_PP_Other_ECR_Eng_Ody.fm
For water
2.
Fill a 25-mL
graduated mixing
cylinder to the 20-mL
mark with sample.
Eriochrome Cyanine R Method*
(0.002 to 0.250 mg/L Al
3.
Add the contents of
one ECR Reagent Powder
Pillow for 20-mL sample
size.
Aluminum
3+
.
See the
Method 8326
4.
Stopper and invert
several times to dissolve
the powder.
Aluminum
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