Humus – LaMotte AST Series Professional Soil Test Outfits User Manual
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HUMUS
Humus consists of the complex remains of fresh plant and animal residue
after extensive chemical and biological breakdown. It accounts for 60 to
70% of the total organic carbon in soil. It can modify the physical
properties of soil, affecting the chemical and biological properties.
*Humus Screening Reagent Powder is EDTA, which extracts the humus
from the soil. The resulting color is matched to a color standard to
determine the humus concentration.
QUANTITY
CONTENTS
CODE
50 g
*Humus Screening Reagent Powder
*5119-H
2 x 60 mL
Soil Flocculating Reagent
5643WT-H
1
Extraction tube
0704
2
Spoon, 0.5 g, plastic
0698
100
F ilter Papers
0465
1
Funnel
0459
1
Humus Color Chart
1384
*WARNING: Reagents marked with an * are considered to be potential health
hazards. To view or print a Material Safety Data Sheet (MSDS) for these
reagents go to www.lamotte.com. To obtain a printed copy, contact LaMotte by
e-mail, phone or fax.
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