LaMotte DC1100-FL - Manual (Page 2)

PRO CE DURE
NOTE:
Read the Model DC1100 Colorimeter Instruction Manual
before proceeding. Carefully wipe tubes dry before inserting into the
colorimeter chamber.
1.
Rinse and fill a clean colorimeter tube (0967) to the 10 mL line
with fluoride-free demineralized water.
2. Use the 0.5 mL pipet (0353) to add 0.5 mL of *Sodium Arsenite
Solution (4128). Cap and mix contents.
3. Use the 1.0 mL pipet (0354) to add 2 measures of *Acid-Zirconyl
SPADNS Reagent (3875). Cap and mix thoroughly. This is the
reagent blank.
4. Insert tube into the colorimeter chamber. Press the “ON/OFF”
button and adjust to 0 ppm with the “SET BLANK” knob. Remove
blank sample.
5. Rinse and fill a second colorimeter tube to 10 mL line with sample
water.
6. Use the 0.5 mL pipet (0353) to add 0.5 mL of *Sodium Arsenite
Solution (4128). Cap and mix contents.
7. Use the 1.0 mL pipet (0354) to add 2 measures of *Acid-Zirconyl
SPADNS Reagent (3875). Cap and mix thoroughly.
8. Insert the tube into the colorimeter chamber and press the
“ON/OFF” button. Record result in (ppm) Fluoride as soon as
reading stabilizes.
LaMOTTE COM PANY
Helping Peo ple Solve An a lyt i cal Chal lenges SM
PO Box 329 • Chestertown • Mary land • 21620 • USA
800-344-3100 • 410-778-3100 (Out side U.S.A.) • Fax 410-778-6394
Visit us on the web at www.lamotte.com
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