LaMotte AST Series Professional Soil Test Outfits - Manual (Page 12)

PROCEDURE
Read Use of the Octa-Slide Viewer on page 5 before proceeding.
1.
Fill a test tube (0106) to 5 mL line with Tricon Flocculating
Reagent (5941).
2. Use the 0.5 g spoon (0698) to add 3 level measures of the soil
sample. Cap and slowly invert back and forth for one minute to mix.
Wait for soil particles to settle.
3. Use a pipet (0354) to fill another tube (0106) to the 2.5 mL line
with the clear solution above the settled soil particles.
4. Add 6 drops of *Wide Range Indicator (2218). Cap and mix.
5. Insert test tube into Octa-Slide Viewer (1100). Slide the pH Wide
Range Octa-Slide Bar (3424) into the viewer. Match sample color
to a color standard. Record as pH.
NOTE: Liming tables are found in the LaMotte Soil Handbook
(Code 1504).
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