Aluminum Test Strips 5-50 ppm Reflectoquant 1 PK *Requires RQflex 2 #16950-1 HAZMAT fee incl

Purchase Aluminum Test Strips 5-50 ppm Reflectoquant 1 PK *Requires RQflex 2 #16950-1 HAZMAT fee incl

Aluminum Test Strips 5-50 ppm Reflectoquant   1 PK *Requires RQflex 2 #16950-1 HAZMAT fee incl REFLECTOQUANT® Aluminum Test Strips, 5-50 ppm, 16994

Additional Production Information
Method: Reflectometric
Color Reaction: Al3+ ions are transformed into aluminate, which in turn reacts with aurin tricarboxylic acid to form a red complex. The concentration of this complex is determined reflectometrically.
Measuring Range: 5-50 ppm
Determinations: 50
Storage Conditions: +15 to +25°C
Shelf Life: 36 months (from day of production)

Reflectoquant® Aluminum Test, Catalog No. 16994/1
1. Method
Al3+ ions are transformed into aluminate, which in turn reacts with aurin tricarboxylic acid to form a red complex. The concentration of this complex is determined reflectometrically.

2. Measuring Range and Number of Determinations
Measuring Range1) Number of Determinations
5.0 - 50.0mg/l Al 50

1)for measurement of concentrations > 50.0 mg/l Al, see section 6

3. Applications
Sample Material: Industrial water, Wastewater, Food

4. Influence of Foreign Substances
This was checked - in the case of interfering ions up to concentrations of 1,000mg/l - in solutions containing 5 and 25mg/l Al. The concentrations of foreign substances given in the table lie below the limit at which the determination is interfered with:

Concentrations of Foreign Substances in mg/l or %

Ag+ 1,000 Mn2+ 100 Anionic Surfactants1) 1,000
Cd2+ 1,000 MnO4- 10 Cationic Surfactants2) 1,000
Cl- 1,000 NO2- 1,000 Nonionic Surfactants3) 1,000
CN- 1,000 NO3- 1,000 NaCl 2.5%
Co2+ 10 OCN- 1,000
Cr3+ 10 Pb2+ 100
CrO42- 1,000 S2- 10
Cu2+ 1 Sn2+ 100
F- 100 SO32- 10
Fe2+ 10 Zn2+ 1,000
Fe3+ 10

1)tested with Na-dodecyl sulfate

2)tested with N-cetylpyridinium chloride

3)tested with polyvinyl pyrrolidone

5. Reagents and Auxiliaries
The analytical test strips are stable at least up to the date stated on the pack when stored in the closed tube at +15 to +25°C.

Package Contents:
Tube containing 50 analytical test strips
Bar code strip
1 bottle of reagent Al–1
1 bottle of reagent Al–2
1 test vessel

Other Reagents:
Universal indicator strips pH 0-14. Cat. No 9590

EM Quant® Aluminum Test, measuring range 10-250 mg/l, Cat. No. 10015

Potassium hydroxide solution 1 mol/l, Cat. No. 9918/2

Hydrochloric acid 1 mol/l Cat. No. HX0603D

Aluminum nitrate nonahydrate GR, Cat. No. AX0705

6. Preparation
Check whether the aluminum content is within the measuring range. Use the EM Quant® Aluminum Test as a guide. Samples containing more than 50.0mg/l Al must be diluted with distilled water.
The pH must be within the range 3-8. Check with universal indicator strips. If pH is lower than 3, add dilute potassium hydroxide solution dropwise; if greater than 8, add dilute hydrochloric acid dropwise.
7. Procedure
Observe the instructions for the RQflex Reflectometer.
The following applies to the Aluminum Test:

Measurement Procedure B

Stored waiting time: 60 sec.

Stored reaction time: 5 sec.

Rinse the test vessel several times with the pretreated sample solution (15-30°C) then fill to the 5-ml mark.
Add 1 drop of reagent Al-1 and swirl.
Remove 1 analytical test strip and immediately reclose the tube.
Immerse both reaction zones of the test strip in the measurement solution for approx. 2 sec.
Vigorously shake off excess liquid from the test strip
Place 1 drop of reagent Al–2 on each of the reaction zones and --this is imperative--at the same time press START button of the reflectometer.
After the end of the waiting time, immediatelyshake off excess liquid from the test strip vigorously
The reaction time is shown on the display.

Insert the test strip all the way into the strip adapter with the reaction zones facing the display and press START button of the reflectometer.
Read off the result from the display in mg/l Al. The result is automatically stored.
Note:
At the end of each workday, cleanse the strip adapter thoroughly with water or ethanol. If necessary, use a 1:1 mixture of hydrochloric acid 1 mol/l and ethanol.

9. Method Control
To check analytical test strips, equipment and procedure:

Dissolve 1.38g of aluminum nitrate nonahydrate in distilled water, make up to 100ml, and mix.

Al concentration 1,000mg/l.

Dilute this standard solution to 25mg/l Al and analyze as described in section 7.

Purchase Aluminum Test Strips 5-50 ppm Reflectoquant 1 PK *Requires RQflex 2 #16950-1 HAZMAT fee incl

  • Gallade Part#: 16994
  • Mfr Part#: 16994-1
  • Brand: EMD Chemicals EM Science
  • Container: 1 PK of 50 Strips
  • Misc: HAZMAT UN1814 PGII CORROSIVE

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