LaMotte MOLYBDENUM TEST KIT MO-DC - Manual (Page 3)

TO THE SAMPLE
6.
Fill pipet (0371) with Mo Titrant (3999). While gently swirling the
tube, add Mo Titrant (3999), one drop at a time, until pink color
changes to yellow, matching the reference tube. Count the number of
drops added. Hold pipet vertically.
7. Multiply number of drops used in Step 6 by 2. Record as ppm
Molybdenum.
# of drops x 2 = ppm Molybdenum (Mo)
To convert Molybdenum (Mo) reading to Molydbate (MoO
4
= ), multiply by
1.7. Record as ppm Molybdate.
To convert Molybdenum (Mo) reading to Sodium Molybdate
(Na
2
MoO
4
- 2H
2
O), multiply by 2.52. Record as ppm Sodium Molybdate.
SAM PLES GREATER THAN 20 ppm MOLYBDATE
1.
Use the 1.0 mL pipet (0354) to add 1.0 mL of sample water to each
test tube (0970-S).
2. Use the pipet (0372) to add 5 drops of *Mo Buffer (3997) to each
tube. Swirl to mix.
3. Follow Steps 3 to 6 above.
4. Multiply number of drops used in Step 6 by 20. Record as ppm
Molybdenum.
# of Drops x 20 = ppm Molybdenum (Mo)