Hanna-instruments HI 83218 Manuel d'utilisateur télécharger pdf (Page 10)

• Do not let the reacted sample stand too long after reagent is added. For best accuracy, respect the

timings described in each specific method.

• It is possible to take multiple readings in a row, but it is recommended to take a new zero reading for

each sample and to use the same cuvette for zeroing and measurement when possible (for most precise

results follow the measurement procedures carefully).

• Discard the sample immediately after the reading is taken, or the glass might become permanently

stained.

• All the reaction times reported in this manual are at 25 °C (77 °F). In general, the reaction time

should be increased for temperatures lower than 20 °C (68 °F), and decreased for temperatures higher

than 25 °C (77 °F).

INTERFERENCES

• In the method measurement section the most common interferences that may be present in an average

sample matrix have been reported. It may be that for a particular treatment process other compounds

do interfere with the method of analysis.

Method Method Page

description

1 Ammonia HR 16

2 Ammonia MR 18

3 Chromium VI HR 20

4 Chromium VI LR 22

5 Nitrate 24

6 Nitrite HR 26

7 Nitrite LR 28

8 Phosphorus 30

• The chemicals contained in the reagent kits may be hazardous if improperly handled.

• Read the Material Safety Data Sheet (MSDS) before performing tests.

• Safety equipment: Wear suitable eye protection and clothing when required, and follow instructions

carefully.

• Reagent spills: If a reagent spill occurs, wipe up immediately and rinse with plenty of water.

If reagent contacts skin, rinse the affected area thoroughly with water. Avoid breathing released vapors.

• Waste disposal: for proper disposal of reagent kits and reacted samples, refer to the Material Safety

Data Sheet (MSDS).

METHOD REFERENCE TABLE

HEALTH & SAFETY

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 35 36

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Hanna-instruments HI 83218 Manuel d'utilisateur Page 10