LaMotte AST Series Professional Soil Test Outfits - Manual (Page 33)

PROCEDURE
1.
Use pipet (0364) to add 2 drops of soil extract to the large
depression on a spot plate (0159).
2. Add 2 drops of deionized water.
3. Use a clean pipet (0364) to add 1 drop of *Aluminum Test Solution
(5101). Use a stirring rod (0519) to mix. Wait one minute.
4. Match sample color to a color standard on the Aluminum in Soil
Color Chart (1301). Record result. Use chart below to convert
reading to an approximate concentration. Record as ppm
Aluminum.
Very Low 5 ppm
Low 10 ppm
Medium 30 ppm
High 80 ppm
Very High 125 ppm
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