LaMotte SMART 2 Electronic Soil Lab - Manual (Page 59)

CHLORIDE
DIRECT READING TITRATOR METHOD CODE M7241
QUANTITY CONTENTS CODE
15 mL *Chloride Reagent #1 *4504-E
60 mL *Silver Nitrate, 0.141N *3062DR-H
1 Test Tube, 5-10-15 mL, plastic, w/cap 0701
1 Spoon, 1g 0697
1 Test Tube, 5-10-15 mL, glass, w/cap 0778
1 Direct Reading Titrator, 0-1000 Range 0384
*WARNING: Reagents marked with a * are considered to be potential health hazards. To view
or print a Material Safety Data Sheet (MSDS) for these reagents see MSDS CD or
www.lamotte.com. To obtain a printed copy, contact LaMotte by e-mail, phone or fax.
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.
SMART2 SOIL MANUAL 1.07 59