LaMotte SMART3 Soil Operator's Manual page 111

SULFUR
BARIUM CHLORIDE METHOD • CODE M3639-46-65-SC
QUANTITY
10 g *Sulfate Reagent
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).
Sulfur is essential to the formation of protein and affects various aspects of plant
metabolism. Sulfur-deficient plants are pale green in color with thin, reedy stems.
Negatively charged sulfate ions are easily leached. The major sources of soil sulfate are
fertilizer containing sulfate compounds and atmospheric sulfur dioxide carried into the
soil by precipitation.
RANGE:
METHOD:
INTERFERENCE:
Smart3 Soil Test Procedures 9.20
CONTENTS
Spoon, 0.1 g, plastic
3-94 ppm Sulfur
Sulfate ion is precipitated in an acid medium with barium
chloride to form a barium sulfate suspension in proportion
to the amount of sulfate present.
Suspended matter and color interference may be removed
by a filtration step. Silica in excess of 500 mg/L will
interfere. Check for stray light interference (see page 69).
CODE
*V-6277-D
0699
SULFUR