LaMotte SMART3 Soil Operator's Manual page 92

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IRON
BIPYRIDYL METHOD • CODE 3648-SC
QUANTITY CONTENTS
30 mL *Iron Reagent #1
5 g *Iron Reagent #2 Powder
1 Pipet, 0.5 mL, plastic
1 Spoon, 0.1 g, plastic
*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).
Iron is essential to the formation of chlorophyll, and iron defi ciency causes chlorosis.
While most soils contain abundant iron, only a fraction is soluble and readily available to
the growing plant. This is particularly true in neutral or alkaline soils. Acid soils contain
higher levels of available iron.
RANGE: 0.00–30.00 ppm Iron
METHOD: Ferric iron is reduced to ferrous iron and subsequently
forms a colored complex with bipyridyl for a quantitative
measure of total iron.
INTERFERENCES: Strong oxidizing agents interfere, as well as copper and
cobalt in excess of 5.0 mg/L.
Smart3 Soil Test Procedures 9.18
www.calcert.com
15
10 20
5 25
0 30
CODE
*V-4450-G
*V-4451-C
0353
0699
IRON
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