Benzotriazole or Tolyltriazole
Benzotriazole or Tolyltriazole
Page 2 of 4
Benzotriazole_PP_Other_UVP_Eng_Ody.fm
5. Put on UV safety
goggles.
6. Insert the ultraviolet
lamp into the sample cell.
Turn on the UV lamp.
7. Touch the timer icon.
Touch
OK.
A 5-minute reaction
period will begin. Low
results will occur if
photolysis (lamp on) takes
place for more or less than
five minutes.
A yellow color will form if
triazole is present.
8. When the timer
beeps, turn the lamp off.
Remove the lamp from
the cell (the prepared
sample). Swirl the cell to
mix thoroughly.
9. Fill another round
sample cell with 25 mL of
sample (the blank).
10. Place the blank into
the cell holder.
11. Touch Zero.
The display will show:
0 mg/L Benzotr
or
0 mg/L Tolyltr
12. Place the prepared
sample into the cell
holder.
Touch
Read.
Results will appear in
mg/L Benzotr or mg/L
Tolyltr.
Interferences
Interfering Substance Interference Levels and Treatments
Acrylates (as methyl
acrylate)
Greater than 50 mg/L
Alum Greater than 400 mg/L
Borate (as sodium
tetraborate)
Greater than 4000 mg/L. Adjust the pH to 4–6 with 1 N sulfuric acid (Cat. No. 1270-32).
Chlorine (as Cl
2
) Greater than 20 mg/L
10 mL
20 mL
25 mL
10 mL
20 mL
25 mL
10 mL
20 mL
25 mL
Zero
10 mL
20 mL
25 mL
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