LaMotte COD3 Plus, Operator'S Manual

Page: 73 / 119

COD3 Plus Colorimeter 10.16
Fluoride
FLUORIDE
SPADNS METHOD • CODE 3647-02-SC
QUANTITY CONTENTS CODE
4 x 30 mL *Acid Zirconyl SPADNS Reagent *3875-G
2 x 30 mL *Sodium Arsenite Solution *4128-G
1 Pipet, 0.5 mL, plastic 0353
1 Pipet, 1.0 mL, plastic 0354
*WARNING: Reagents marked with an * are considered to be potential health hazards.
To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com.
Search for the four digit reagent code number listed on the reagent label, in the
contents list or in the test procedures. Omit any letter that follows or precedes the four
digit code number. For example, if the code is 4450WT-H, search 4450. To obtain a
printed copy, contact LaMotte by email, phone or fax.
Emergency information for all LaMotte reagents is available from Chem-Tel:
(US, 1-800-255-3924) (International, call collect, 813-248-0585).
Fluoride may occur naturally in some ground waters or it may be added to public
drinking water supplies to maintain a 1.0 mg/L concentration to prevent dental cavities.
At higher concentrations, fl uoride may produce an objectionable discoloration of
tooth enamel called fl uorosis, though levels up to 8 mg/L have not been found to be
physiologically harmful.
NOTE: This procedure uses the EPA approved Reagent System for fl uoride found in
method 4500-F-D, 18th Edition of Standard Methods, pp. 1-27.
Testing