LaMotte SMART3 Colorimeter - Manual (Page 289)

ZINC – LOW RANGE
ZINCON METHOD • CODE 3667-SC
QUANTITY CONTENTS CODE
30 mL *Zinc Indicator Solution *6314-G
120 mL *Methyl Alcohol *6319-J
10 g Sodium Ascorbate Powder 6316-D
25 g *Zinc Buffer Powder *6315-G
15 mL *Sodium Cyanide, 10% *6565-E
30 mL *Formaldehyde Solution, 37% *5128-G
1 “Dilute Zinc Indicator Solution” Bottle, w/1
pipet assembly
6314-MT
1 Graduated Cylinder, 10 mL, glass 0416
1 Spoon, 0.5 g, plastic 0698
2 Pipets, plain, plastic 0352
1 Spoon, 0.1 g, plastic 0699
*WARNING: Reagents marked with an * are considered to be potential health
hazards. To view or print a Material Safety Data Sheet (MSDS) for these reagents
go to www.lamotte.com. To obtain a printed copy, contact LaMotte by e-mail,
phone or fax.
Zinc enters the domestic water supply from the deterioration of galvanized iron
and brass pipes, and from industrial wastes. Zinc is an essential element for body
growth and development and is an important plant nutrient. Concentrations of zinc
above 5.0 mg/L in drinking water can cause a bitter astringent taste. In the U.S.,
zinc concentrations may vary between 0.06 to 7.0 mg/L, with an average value of
1.33 mg/L.
SMART3 Test Procedures 11.11 ZINC, Low Range
Test P
rocedures