LaMotte SMART3 Colorimeter User Manual

Page 90

APPLICATION:

Corrosion and rust inhibitors in cooling water systems

RANGE:

0.0 – 30.0 ppm Benzotriazole

0.0 – 30.0 ppm Tolyltriazole

MDL:

0.5 ppm Benzotriazole

0.5 ppm Tolyltriazole

METHOD:

Benzotriazole and tolyltriazole are UV-photolyzed in a

buffered solution with a pH between 4 and 6. A yellow

color develops in proportion to the concentration of triazole

present.

SAMPLE

HANDLING &

PRESERVATION:

Samples should be analyzed as soon as possible after

collection.

INTERFERENCES:

Tolyltriazole with interfere in the benzotriazole test.

Benzotriazole will interfere in the tolyltriazole test. Strong

reducing or oxidizing agents will interfere.

BENZOTRIAZOLE/TOLYTRIAZOLE

SMART3 Test Procedures 11.10

Test P

rocedures