Since 1919
LaMotte Smart2 Colorimeter
It all begins here...
What are you testing today?

Individual Test Kits:

Sulfite (Individual Test Kits)

Sulfite: An iodide-iodate titrant oxidizes sulfite to sulfate under acid conditions, until all of the sulfite is reacted. The titrant then reacts with starch to form a blue color signifying the endpoint.

Order Code/Model
Test System
Range/Sensitivity
# of Tests
(# Reagents)
Shipping Code (Weight/lbs)

7175-DR
SIT-DR

Direct Reading Titrator 0–100 ppm/2 ppm SO32– 50 at 100 ppm (3) N (1)

7175
SIT-DC

Dropper Pipet 1 drop = 5 ppm SO32– 50 at 100 ppm (3) N (1)
7132 Dropper Bottle 1 drop = 2, 5, or 10 ppm SO32– 100+ (3) N (1)
Shipping Codes:

*(NPDWR) EPA Accepted
†(NPDES) EPA Accepted

Direct Reading Titrators have a specific range, but may be refilled to test higher concentrations.


LaMotte Company

P.O. Box 329 | 802 Washington Avenue | Chestertown | Maryland | 21620
Tel: 800-344-3100 (within the U.S.A.) | 410-778-3100 | 410-778-3101
Fax: 410-778-6394