LaMotte SMART3 Soil Operator's Manual page 88

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CHLORIDE
DIRECT READING TITRATOR METHOD • CODE M7241
QUANTITY CONTENTS
15 mL *Chloride Reagent #1
60 mL *Silver Nitrate, 0.141N
1 Test Tube, 5-10-15 mL, plastic, w/cap
1 Spoon, 1g
1 Test Tube, 5-10-15 mL, glass, w/cap
1 Direct Reading Titrator, 0-1000 Range
*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).
Chlorides are present in practically all soils. Application of fertilizer may increase
chloride levels. Chlorides are removed from soil by leaching. Excessive concentrations
are toxic to plants. A high test reading, particularly where stunted growth has been
observed, may indicate poisoning due to high chloride levels in the soil. This test
is valuable on saline soils or when contamination from sea water or sea spray is
suspected. Normal soils of humid regions rarely give readable tests, except when
recently receiving liberal amounts of fertilizers containing chlorides.
RANGE: 0-1000 lb/acre Chloride
METHOD: In a neutral or slightly alkaline solution, potassium
dichromate indicates the endpoint of the silver nitrate
titration.
INTERFERENCES: Bromine, iodide and cyanide register as equivalent chloride
concentrations.
Smart3 Soil Test Procedures 9.18
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15
10 20
5 25
0 30
CODE
*4504-E
*3062DR-H
0701
0697
0778
0384
CHLORIDE
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