User Guide

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Instruction Manual

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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 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 dam-

age, notify your Dealer or the nearest Hanna office

immediately.

Each kit is supplied with:

•

HI 3882-0 pH 3.0-5.0 Reagent, 1 bottle with

dropper (25 mL);

•

1 checker disc;

•

2 glass vials with caps;

•

1 plastic pipette (3 mL).

Note: Any damaged or defective item must be returned in

its original packing materials.

HI 3882

pH 3.0-5.0

Test Kit

ISTR3882 10/99 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:

LiquidLiquid

Liquid

pH ValuepH Value

pH Value

Sea water 7.8-8.2

Gastric juices 1.7

Milk 6.5-7

Soil 6-7 (optimum for crops)

Range 3.0 to 5.0 as pH unit

Smallest Increment 0.1 as pH unit

Analysis Method Colorimetric

Sample Size 5 mL

Number of Tests 200

Case Dimensions 165x150x38 mm (6.5x5.9x1.5")

Shipping Weight 215 g (7.6 oz.)

SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

SIGNIFICANCE AND USESIGNIFICANCE AND USE

SIGNIFICANCE AND USE

CHEMICAL REACTIONCHEMICAL REACTION

CHEMICAL REACTION

HI 3882-0 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 reagent bottle be-

fore use.

• Using the plastic pipette, fill each glass

vial with 5 mL of sample, up to the

mark.

• Insert one of them into the left hand

opening of the checker disc. This is the

blank.

• Add to the other glass vial 2 drops of HI 3882-0

reagent. Replace the cap and mix the solution by

gently swirling. This is the reacted sample.

• Remove the cap and in-

sert the reacted sample

into the right hand open-

ing of the checker disc.

• Hold the checker disc so

that a light source illumi-

nates the samples from

the back windows.

REFERENCESREFERENCES

REFERENCES

Vogel's, Quantitative Chemical Analysis, 5

Ed., Longman

Scientific & Technical.

HEALTH AND SAFETYHEALTH AND SAFETY

HEALTH AND SAFETY

The chemicals contained in this kit may be hazardous if

improperly handled. Read Health and Safety Data Sheet

before performing this test.

• Rotate the disc while looking at the color test windows

and stop when you find the color match. Read the

value in the result window and record it in pH units.

Note: A concentration of Chlorine above 50 ppm causes

interference inhibiting the development of the color.

In this case require the HI 3882/O Test Kit.

For best results: Intensely colored samples will make the color

matching determination difficult and they should be

adequately treated before performing the test. Sus-

pended matter in large amounts should be removed

by prior filtration.

Caution: Ultraviolet radiation may cause fading of colors.

When not in use, keep the disc protected from light,

in a cool and dry place.

INSTRUCTIONSINSTRUCTIONS

INSTRUCTIONS