Molybdate HR Test Kit (0-150 ppm)

Description

PRODUCT INFORMATION FLYER

BACKGROUND OF THE TEST:

In closed loop cooling towers, Molybdate-based formulations are used for corrosion control. Nuclotrasis offers user friendly test method with ease of handling the relevant reagents and other equipment in which the sample is first buffered and masked under acidic conditions and is then treated with thioglycolate reagent to form yellow color complex having maximum absorbance at 420 nm whose intensity is proportional to the concentration of Molybdate in the solution.

REAGENTS/EQUIPMENTS/APPARATUS:

• Provided 5 mL & 10 mL marked glass vial (Item Code: 02-01)

• NUCLOTRASIS MOLYBDATE HR-I REAGENT (Item Code: 01-17-1)

• NUCLOTRASIS MOLYBDATE HR-II (Item Code: 01-17-2)

SAMPLE COLLECTION & PREPARATION

• Make sure to immediately analyze the sample after collection of sample.

• Ensure to collect sample in a suitable and designated bottle for a specific sample.

• Thoroughly rinse the sample bottle with current sample and fill the sample by allowing slight overflow and immediately tighten the cap.

TEST PROCEDURE:

1. Use the provided glass vial for sample analysis and rinse it by sample to be analyzed and take sample to 10 mL mark in the given vial, call it as “A”.

2. Similarly take 10 mL deionized water in a cuvette used with photometer for reagent blank and call it as “B”. 3. In the sample, add nine (09) drops of MOLYBDATE HR-I REAGENT (Item Code: 01-17).

4. Then add one (01) drop of MOLYBDATE HR-II (Item Code: 01-17-2).

5. The solution will turn yellow while color intensity is proportional to concentration of Molybdate concentration in the sample.

6. Meanwhile, select Molybdate specific channel/test in the spectrophotometer.

7. First run reagent blank “B” to achieve blanking.

8. Then run test sample “A” and note the Photometer display reading in mg/L. In case photometer is not available, match the developed color with the provided soft copy color comparator of this MOLYBDATE HR test kit.

9. Multiply the reading with dilution factor 1.05.
To convert from Molybdate to Molybdenum or Sodium Molybdate:
Molybdate (MoO4) x 0.6 = ppm Molybdenum (Mo)
Molybdate (MoO4) x 1.3 = ppm Sodium Molybdate (Na2MoO4)