Camlab Lovibond MD 610, Instruction Manual

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119
MD 610_2d 11/2019
Notes:
1. Application: Testing of residual corrosion inhibitors (Oxygen scavengers)in boiler feed
water or condensate.
2. Before using clean the vials with Hydrochloric acid (approx. 20%). Rinsethoroughly with
deionised water.
3. Keep the sample dark during colour development time. UV-light (sunlight) causeshigh
measurement results.
4. Ideal temperature for full colour development is 20°C ± 2°C.
5. Interferences:
• Iron (II) interferes at all concentrations:
Repeatthe test procedure but without adding the DEHAsolution. If the displayed
result is above 20 μg/l subtract this value from the DEHAtest result.
• Substanceswhich reduce Iron (III)interfere. Substanceswhich complex iron strongly
may interfere also.
• Substanceswhich may interfere when present in concentrations at:
Borate (as Na
2
B
4
O
7
) 500 mg/l
Cobalt 0.025 mg/l
Copper 8.0 mg/l
Hardness (as CaCO
3
) 1000 mg/l
Lignosulfonates 0.05 mg/l
Manganese 0.8 mg/l
Molybdenum 80 mg/l
Nickel 0.8 mg/l
Phosphate 10 mg/l
Phosphonates 10 mg/l
Sulfate 1000 mg/l
Zinc 50 mg/l
6. Thereis an option to change the unit from mg/l to μg/l.
mg/l
μg/l
Reagent Form of reagent/Quantity Order-No.
DEHA Solution ca. 60 Tests Liquid reagent / 15 ml 461185
DEHASolution ca. 400 Tests Liquid reagent / 100 ml 461181
DEHA Tablet / 100 513220BT