Hanna Instruments hi 3880o ユーザーズマニュアル

www.hannainst.com

Dear Customer,
Thank you for choosing a Hanna Product.
Please read the instructions carefully before using the
chemical test kit. It will provide you with the necessary
information for a correct use of the kit.
Remove the chemical test kit from the packing material and
examine it carefully to make sure that no damage has
occurred during shipping. If there is any noticeable damage,
notify your Dealer or the nearest Hanna office immediately.
Each kit is supplied with:

• HI 3880-0 pH 4.0-6.5 Reagent, 1 bottle with

dropper (25 mL);

• Dechlorinating Reagent, 1 bottle with dropper (10

mL), to be used in presence of chlorine above  50
ppm

;

• 1 color comparator cube.

Note: Any damaged or defective item must be returned in

its original packing materials.

ISTR3880/OR2      11/02     PRINTED IN ITALY

pH represents acidity or alkalinity of an aqueous solution
and is proportional to the hydrogen-ion concentration of the
solution. Under neutral conditions water is dissociated into
the OH

-

 and H

+

 ions in equal ratio and hence it has a pH

of 7. When bases or acids are added to a water solution

they ionize, increasing the concentration of OH

- 

or H

+

,

respectively. Thus solutions with a pH of 1-3 contain strong
acids, whereas those with a pH of 4-6 contain weak acids.
Weak bases result in solutions of pH 8-10 and strong bases
in pH of 11-13.

Examples of pH value for some liquids:
Liquid

Liquid

Liquid

Liquid

Liquid

pH Value

pH Value

pH Value

pH Value

pH Value

sea water

7.8-8.2

gastric juices

1.7

milk

6.5-7

soil

6-7 (optimum for crops)

 Range

4.0 to 6.5 as pH unit

 Smallest Increment

0.5 as pH unit

 Analysis Method

Colorimetric

 Sample Size

5 mL

 Number of Tests

100

 Case Dimensions

115x102x82 mm (4.5x4.0x3.2")

Shipping Weight

150 g (5.3 oz.)

HI 3880-0 Hanna Reagent reacts in contact with the
aqueous solution changing its color according to the hydrogen-
ion concentration (pH) in the given range.

READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT
• Note:     always shake the HI 3880-0 reagent bottle

before use.

• Fill the color comparator cube with 5 mL of

the sample.

• In case of concentration of chlorine above 50 ppm, add

one drop of the Dechlorinating Reagent to the sample.
Replace the cap and mix by

inverting the cube

several times.

• Add 3 drops of reagent HI 3880-0.

• Replace the cap and mix the

solution by inverting the
cube several times.

Vogel's
Quantitative Chemical Analysis
5th Ed.
Longman Scientific & Technical.

The chemicals contained in this kit may be hazardous if
improperly handled. Read Health and Safety Data Sheet
before performing this test.

• Determine which color best

matches the solution in the cube
and record the result as pH unit.

• It is better to match the color with a white sheet  at

about 10 cm behind the color comparator cube.

Note: To measure pH in the 6.0-8.5 range use the HI

3881 pH 6.0-8.5 Test Kit.
To measure pH in the 7.5-10.0 range use the HI
3886 pH 7.5-10.0 Test Kit.