LaMotte AST Series Professional Soil Test Outfits - Manual (Page 36)

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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