LaMotte SMART3 Soil Operator's Manual page 90

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COPPER
DIETHYLDITHIOCARBAMATE METHOD • CODE M3639-46-65-SC
QUANTITY CONTENTS
15 mL *Copper 1
*WARNING: Reagents marked with an * are considered to be potential health hazards.
To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com.
Search for the four digit reagent code number listed on the reagent label, in the
contents list or in the test procedures. Omit any letter that follows or precedes the four
digit code number. For example, if the code is 4450WT-H, search 4450. To obtain a
printed copy, contact LaMotte by email, phone or fax.
Emergency information for all LaMotte reagents is available from Chem-Tel:
(US, 1-800-255-3924) (International, call collect, 813-248-0585).
Like many other micronutrients, the amount of available copper varies considerably with
the type of soil. Well drained sandy soils are usually low in copper while heavily clay-type
soils contain an abundant supply of copper. Like manganese, copper may be unavailable
in soils that have a high organic make-up because it readily forms insoluble complexes
with organic compounds.
Generally from 0.2-25 lb/acre of copper is added to the soil to correct a defi cient level.
Copper is another metal that is necessary in the formation of the chlorophyll molecule
and like other metals, e.g. iron, manganese and zinc acts as a catalyst.
RANGE: 0.00–35.00 ppm Copper
METHOD: Copper ions form a yellow colored chelate with
diethyldithiocarbamate around pH 9-10 in proportion to
the concentration of copper in the sample.
INTERFERENCES: Bismuth, cobalt, mercurous, nickel and silver ions and
chlorine (6 ppm or greater) interfere and must be absent.
Smart3 Soil Test Procedures 9.18
www.calcert.com
15
10 20
5 25
0 30
CODE
*6446-E
COPPER
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