Lamotte com pany – LaMotte PLANT TISSUE TEST KIT PT-3R User Manual
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PO TAS SIUM (POT ASH) TEST
1.
Fill the “Potash A” Tube (0245) to the lower line with the filtered
tissue extract.
2.
Add one *Potassium Reagent B Tablet (5161). Cap and shake until
tablet dissolves.
3.
Use the transfer pipet (0364) to add *Potassium Reagent C (5162)
until the tube is filled to the upper line. Allow the *Potassium
Reagent C to run slowly down the side of the tube. Swirl tube gently
to mix. A precipitate indicates the presence of potassium. The
heavier the precipitate, the more potassium is present. Compare
formation of precipitate in healthy plant tests and problem plant
tests.
Results:
Heavy Precipitate
Adequate to
Abundant potassium (potash)
Medium Precipitate
Possible potassium deficiency
Trace Precipitate
Deficient potassium
No Precipitate
Extremely Deficient potassium
LaMOTTE COM PANY
Helping Peo ple Solve An a lyt i cal Chal lenges
®
PO Box 329 • Chestertown • Mary land • 21620 • USA
800-344-3100 • 410-778-3100 (Out side U.S.A.) • Fax 410-778-6394
Visit us on the web at www.lamotte.com
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