LaMotte THPS in Tolcide® PS Biocides - Manual

De ter mi na tion of Tetrakishydroxymethyl
Phosphonium Sul fate (THPS)
in Tolcide ® PS Biocides
CODE 4-8776
QUANTITY CONTENTS CODE
120 mL *DSP Reagent, 10% Solution *4133-J
120 mL *Borate Buffer Solution *4135-J
120 mL *PSSA Reagent, 5% Solution *4134-J
30 mL Starch Indicator Solution 4170WT-G
60 mL *Iodine Solution, 0.025N *6377-H
15 mL *Zinc Acetate, 2N *3843-E
1 Test Tube, plastic, 5-10-25 mL, w/cap 0715
3 Pipets, 1 mL, plastic 0354
1 Direct Reading Titrator, 0 - 100 Range 0381
1 Dispenser Cap 0601
*WARNING: Reagents marked with a * are considered hazardous substances.
To view or print a Material Safety Data Sheet (MSDS) for these reagents see
MSDS CD or our website. To obtain a printed copy, contact us by e-mail, phone
or fax.
To order individual reagents or test kit components, use the specified code
number.
INTERFERENCES: Hydrogen sulfide can interfere with the
determination of THPS. Pretreatment with zinc acetate will remove the
interference. Add 5 drops of *Zinc Acetate, 2N (3843) for every 100 ppm
hydrogen sulfide present in a 50 mL sample. Filter off the white precipitate
that forms and proceed with Steps 1-11 using the filtrate.