Hanna Instruments hi 93741 用户手册

7

The HI 93710 meter measures both pH and chlorine (Cl

2

, free and

total) content in water and wastewater in the following ranges:
pH

5.9 to 8.5 pH units

Free Chlorine

0.00 to 2.50 mg/L (ppm)

Total Chlorine

0.00 to 3.50 mg/L (ppm).

SPECIFICATIONS

Range         pH 5.9 to 8.5

            Free Cl

2

0.00 to 2.50 mg/L

            Total Cl

2

0.00 to 3.50 mg/L

Resolution

0.1 pH/0.01 mg/L Cl

2

Accuracy

±0.1 pH

±0.03 mg/L ±3% of Cl

2

 reading

Typical EMC

±0.2 pH

Deviation

±0.02 mg/L Cl

2

Light Source

Light Emitting Diode @ 555 nm

Method

Adaptation of the EPA recommended DPD method

330.5 for chlorine analysis. The reaction with

reagents causes a pink tint in the sample.

For pH, Phenol red method. The reaction with

reagents causes a red tint in the sample.

REQUIRED REAGENTS

Code

Unit

Description

Quantity

HI  93710-0

pH

Phenol red

5 drops

HI  93701-0

Free Cl

2

DPD

1 packet

HI 93710

pH/Chlorine

46

• Fill the cuvet up to the mark with 10 mL of

unreacted sample and replace the cap.

• Place the cuvet into the holder and

ensure that the notch on the cap is
positioned securely into the groove.

• Press ZERO and “SIP” will appear on the display.

• Wait for a few seconds and the display will

show “-0.0-”. Now the meter is zeroed and
ready for measurement.

• Remove the cuvet and add 5

drops of the HI 93710 Phenol
Red Indicator. Replace the cap
and swirl the solution.

• Reinsert the cuvet into the instrument.

• Press the READ key and “SIP” will appear on the display during

measurement.

• The instrument directly displays the pH measured value on the

Liquid Crystal Display.

ZERO

pH