LaMotte AST Series Professional Soil Test Outfits - Manual (Page 35)

PROCEDURE
1.
Use a transfer pipet (0364) to add 10 drops of soil extract to the
large depression on a spot plate.
2. Use the 0.05 g spoon (0696) to add one measure of Manganese
Buffer Reagent (6310). Mix with a clean stirring rod (0519) until
the powder dissolves.
3. Use the other 0.05 g spoon (0696) to add one measure of
*Manganese Periodate Reagent (6311). Mix with a clean stirring
rod for 20 seconds.
NOTE: Immediately clean the spot plate to prevent staining.
4. Match the color in the spot plate to a color standard on the
Manganese in Soil Color Chart (1307-01). Record as ppm
Manganese.
Low 5 ppm
Medium 12 ppm
High 25 ppm
Very High 40 ppm
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