Hanna-instruments HI 4010 Bedienungsanleitung PDF herunterladen (Seite 13)

If no fluoride complexing species are in the sample, TISAB

needn’t be added at the same proportions. Add 1 parts

TISAB to 100 parts sample or standard. Ionic strength will

be fixed at approximately 0.02M. Attention: Always pre-

pare samples and standards with the same ISA to volume

ratio.

1) Follow sections VIII and IX to prepare sensors for

measurement.

2) Follow section VI to prepare standards/solution. Stan-

dards should bracket the sample concentration. Stan-

dards and solutions should be at the same tempera-

ture.

1 part of TISAB is added to 100 parts of both samples

and standards. Add stir bar and mix before taking

measurements.

3) Follow section VII; General Guidelines to optimize test

set-up.

4) During calibration it is best to start with lower concen-

tration samples first. Wait for a stable measurement

before recording values. Longer equilibrations are re-

quired at lower concentrations (4-5 minutes).

5) To prevent carry over and contamination of samples,

rinse sensors with deionized water and dab dry be-

tween samples.

Typical Linearity for HI 4010 and HI 4110 Sensors

-150.00

-100.00

-50.00

0.00

50.00

100.00

150.00

200.00

250.00

0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00

-Lo

of Concentration

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Hanna-instruments HI 4010 Bedienungsanleitung Seite 13