Fig 1.2 Test cell
Place the
test
cell in the
right side
of the comparator as shown in fig 1.2
Rotate the disc until colour match is obtained.
Record disc reading that is displayed in the small viewing
window to the bottom right.
Nitrate concentration is the reading on the disc.
Notes
•
For best results, rinse vials thoroughly between with deionised water. Ensure that the outside of the vials
are clean.
•
The tablets should be added direct from the foil avoiding contact with hands or surfaces.
•
Nitrite present in the sample will also react leading to a higher result. To correct, carry out a nitrite test
(C270) on the sample and subtract the result.
•
Nitrite concentrations above 1mg/l can be diluted up to 100x, with the result multiplied up accordingly to
compensate.
•
If the sample flocculates it is likely the sample contains high concentrations of Nitrate. Dilute the sample
at least 10x and retest.
•
Interferences may occur from the presence of the following ions: Antinomy (III), Iron (III), Lead, Mercury
(I), Silver, Chloroplatinate, Metavanadate, Bismuth.
•
Copper(II) ions may artificially lower the result.
Summary of Contents for AquaSafe WSL25 Plus
Page 1: ...AquaSafe WSL25 Plus Water Safety Laboratory Instruction Manual...
Page 7: ...Section 3 AquaSafe Micro biological Incubator Instruction Manual...
Page 25: ...Section 4 AquaSafe Membrane Filtration Instruction Manual...
Page 41: ...Section 5 AquaSafe Turbidity Tube Instruction Manual...
Page 44: ...Section 6 AquaSafe Comparator Instruction Manual...
Page 58: ...Section 7 HydroLite HL101 Pocket pH Tester Instruction Manual...
Page 73: ...Section 8 HydroLite HL102 Pocket EC Tester Instruction Manual...
