Lovibond PM 620, Инструкция по эксплуатации, Страница: 64 / 180

56 PM620_4c 07/2015
1.1 Methods
21. Close the vial tightly with the cap and swirl several times
until the tablet is dissolved.
22. Place the vial in the sample chamber making sure that
the marks are aligned.
23. Wait for a reaction period of 2 minutes .
24. Press TEST key.
Record the displayed test result (C).
25. Remove the vial from the sample chamber.
26. Add
one DPD ACIDIFYING tablet
straight from the foil
to the same water sample and crush the tablet using a
clean stirring rod.
27. Wait for a
reaction period of 2 minutes
.
28. Add one DPD NEUTRALISING tablet straight from
the foil to the same water sample and crush the tablet
using a clean stirring rod.
29. Close the vial tightly with the cap and swirl several times
until the tablets are dissolved.
30. Place the vial in the sample chamber making sure that
the marks are aligned.
31. Press
TEST
key.
Record the displayed test result (D).
Zero accepted
prepare Test
press TEST
Zero accepted
prepare Test
press TEST