LaMotte SMART 2 Electronic Soil Lab - Manual (Page 46)

Test Factor (Test #)
Range
(ppm)
Test Method (# of Reagents)
# of
Tests
Phosphorus, Total
Low-Range (81) 0.00–3.50 mg/L Ascorbic Acid/Digestion (5) 25
Phosphorus, Total
High-Range (82) 0.0–100.0 mg/L Molybdovanadate/Digestion (5) 25
Potassium (82) 0.0–10.0 Tetraphenylboron (2) 100
Silica-Low Range (86) 0.0–4.0 Heteropoly Blue (4) 50
Silica-High Range (87) 0–75 Silicomolybdate (3) 50
Sulfate-High Range (90) 5–100 Barium Chloride (1) 50
Sulfide-Low Range (91) 0.00–1.50 Methylene Blue (3) 50
Surfactants (95) 0.0–8.0 Bromphenol Blue (3) 50
Tannin (97) 0.0–10.0 Tungsto-molybdophosphoric Acid
(2) 50
Tolytriazole (10) 0–30 UV Photolysis (4) 50
Turbidity (99) 0–400 FTU Absorption (0)
¥
Zinc-Low Range (100) 0.00–3.00 Zincon (6) 50
On the meter display, “NA” following the test number indicates that a calibration for that
test number is not available.
46 SMART2 SOIL MANUAL 1.07