Hanna-instruments HI 83740 Instrukcja Użytkownika Pobierz pdf (Strona 5)

Range 0.00-1.50 mg/L

Resolution 0.05 mg/L

Precision SD ±0.05 mg/L @ 0.50 mg/L

Light Source Tungsten lamp with narrow band interference filter @ 560 nm

Light Detector Silicon Photocell

Method The reaction between Copper and the reagents causes a purple tint in

the sample.

Environment 0 to 50°C (32 to 122°F); max 95% RH non-condensing

Battery Type 4 x 1,5 volt AA batteries / 12 to 20 VDC through voltage adapter

Auto-Shut off

After 15' of non-use in measurement mode.

Dimensions 225 x 85 x 80 mm (8.7 x 3.3 x 3.1")

Weight 500 g (17,6 oz.).

REQUIRED REAGENTS

Code Description Quantity/test

HI 83740A-0 Copper Reagent A 5 mL

HI 83740B-0 Copper Reagent B 5 mL

HI 83740C-0 Copper Reagent C 2 x 4 spoons

HI 83740D-0 Copper Reagent D 2 x 4 spoons

SPECIFICATIONS

Precision is how closely repeated measurements agree

with each other. Precision is usually expressed as

standard deviation (SD). Accuracy is defined as the

nearness of a test result to the true value.

Although good precision suggests good accuracy,

precise results can be inaccurate. The figure explains

these definitions.

In a laboratory using a standard solution of 0.50

mg/L copper and a representative lot of reagent, an

operator obtained with a single instrument a standard

deviation of 0.05 mg/L.

PRECISION AND ACCURACY

• Insert the zero (cuvet #1) into the holder and

close the lit.

(Zero)

(Sample)

• Press ZERO and “----” will blink on the display.

• After a few seconds the display will show “-0.0-”. The

meter is now zeroed and ready for measurement

Note:

If the “L Lo” (Low Light) message appears, the sample

must be diluted. See “General tips for an accurate

measurement” (page 12).

• Remove the cuvet from the instrument.

• Insert the reacted sample (cuvet #2) into the holder

and close the lid.

• Press READ and the display will show “----” during

measurement.

• The instrument directly displays concentration in mg/L

(ppm) of copper on the Liquid Crystal Display.

Note:

If the copper concentration exceeds 1.50 ppm or if

the sample is very turbid or dark red colored, it is

recommended to dilute the sample 10 times with

HI 83742-1 Wine Solvent-1 and repeat the

complete measurement procedure starting from the

beginning, taking 15 mL of diluted wine sample in

vial #1 for zero-sampling and 15 mL in vial #2

for reading. In this case the displayed value needs

to be multiplied by 10 to compensate for dilution.

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