WATER AND WASTEWATER
FAS-DPD CHLORINE DROP TEST KIT
This test is an adaptation of procedure 408D in Standard Methods for the Examination of Water and
Wastewater (15th ed., 1980).
This procedure yields results equivalent to other recommended tests including the iodometric-amperometric
titration procedure (procedure 409C,Standard Methods, 14th ed.). It allows for the determination of FAC (free
available chlorine) and TAC (total available chlorine).
The dropper tip closure supplied with the R501 FAS titrant is specifically designed to dispense 1/25ml. of titrant
per drop and is a low cost substitute for the burrette. One drop of FAS titrant is equivalent to 0.2ppm as
THE ANALYST SHOULD BE AWARE THAT THE ANALYSIS MAY BE SUBJECT TO INTERFERENCES
FROM BOTH OXIDIZING AND REDUCING AGENTS PRESENT IN THE SAMPLE.
2 oz. droptip FAS titrant
10 gm. DPD powder and buffer
15 gm. potassium iodide powder
.2 gm. scoop
1-No. 30/No. 8
set of instructions