16
•
DPD reacts with both chlorine and bromine. However, it
is possible to determine bromine in the presence of
chlorine,
and
to
separate
between
bromine
and
chlorine residuals using a DPD methodology. For
instructions on how to do this, please contact your local
Palintest branch, distributor or see www.palintest.com
Reagents
AP 011 – DPD No 1 Tablets (Low Range)
AP 013 – DPD-XF Tablets (High Range)
AP 031/1 – DPD No 3 Tablets (Low Range)
AP 033/1 – DPD-XT Tablets (High Range)
AP 017 – DPD Oxystop Tablets
17
pH
Range: 6.5 – 8.4
Wavelength – 575 nm
Method – Phenol Red
1
Fill test tube with sample to the 10 ml mark.
2
Add one PHENOL RED tablet, crush and mix to
dissolve.
3
Take the photometer reading.
Reagents
AP 130 - Phenol Red Tablets