Hanna-instruments HI 38083 Manuel d'utilisateur télécharger pdf

Instruction Manual

www.hannainst.com

Dear Customer,

Thank you for choosing a Hanna Product.

Please read the instruction sheet carefully before using the

test kit. It will provide you with the necessary information

for correct use of the kit. If you need additional information,

do not hesitate to e-mail us at [email protected].

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 38083A-0 Calcium Sulfate, 1 bottle (10 g);

•

Buffer Solution 10.2±0.2, 1 bottle with dropper

(30 mL);

•

HI 38083C-0 EDTA Solution, 3 bottles (3 x 100 mL);

•

Calmagite Indicator, 1 bottle with dropper (10 mL);

•

Demineralizer Bottle with filter cap for about 12 liters

of deionized water (depending on the hardness level

of water to be treated)

;

• 1 2-mm soil sieve;

•

1 plastic test tube (14 mL) with screw cap;

•

1 plastic test tube (50 mL) with screw cap;

• 1 small funnel;

• filter paper discs

∅

80 mm (100 pcs);

• 1 brush;

• 1 calibrated plastic vessel (50 mL);

ISTR38083 02/00 PRINTED IN ITALY

INSTRUCTIONSINSTRUCTIONS

INSTRUCTIONS

SAMPLING PROCEDURESAMPLING PROCEDURE

SAMPLING PROCEDURE

SIGNIFICANCE AND USESIGNIFICANCE AND USE

SIGNIFICANCE AND USE

Alkaline soils are characterized by a low electrical conductiv-

ity (EC), high exchangeable sodium percentage (ESP) and

presence of carbonate and bicarbonate sodium salts. Hy-

drolysis of carbonate causes also an increase in pH, such

that it is always greater than 8.5.

The "saline-sodic" soil group, which possesses the following

peculiarities, also belongs to this alkaline group:

EC > 4 mmhos, ESP > 15, pH ≤ 8.5

High alkalinity causes impairment to plant growth since it

gives rise to an incomplete solubilization of necessary nutri-

ents such as iron, copper and manganese. Chlorosis, for

instance, is a typical disease of leaves due to iron deficiency.

It is possible to correct soil alkalinity by adding a proper

compound (generally gypsum) that removes sodium and

decreases the pH. The exact quantity of gypsum needed for

correction can be calculated with the Hanna Gypsum Re-

quirement Test Kit.

READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT

• Remove the cap and fill

the Demineralizer Bottle

with tap water.

• Replace the cap

and shake gen-

tly for at least

2 minutes. The

demineralized

water is now

ready.

• Flip open the top of the Dem-

ineralizer Bottle cap. By gently

squeezing the bottle, add dem-

ineralized water to the large (50

mL) test tube up to the 25 mL

mark.

• Add 1 spoon of HI 38083A-0 Calcium Sulfate (discard

the excess soil by using the handle of the other spoon).

• Place the cap

on the tube

and shake it

several times

during a 15

minute period.

• Place the tube into the

large (50 mL) vessel and

wait for 30 minutes. The

saturated calcium sulfate

extractant solution is

ready.

• 2 calibrated plastic vessels (20 mL) with cap;

•

1 plastic pipette (3 mL);

•

1 plastic pipette (1 mL);

• 1 syringe (1 mL) with tip;

•

2 spoons.

Note: Any damaged or defective item must be returned in

its original packing materials.

WHEN TO TEST YOUR SOIL

Soil should be tested not only when the plant appears to

be unhealthy (yellow leaves or stunted growth), but prior to

seeding, planting and fertilizing as well as when other

material such as manure or compost has been added.

SAMPLING

1) Soil Sample Extraction

– Within a large homogeneous area, take 1 or 2 samples

per 1000 m

(0.25 acre).

– Even for smaller areas, 2 samples are recommended

(the more samples, the better the end-results, be-

cause the end sample is more representative).

– For a small garden or plot, 1 sample is sufficient.

2) Avoid extracting samples from soil presenting obvious

anomalies and from border areas (near ditches and roads).

3) Sample quantity:

Take the same quantity of soil for each sample. For ex-

ample, use bags with similar dimensions (1 bag per

sample).

4) Depth of extraction:

General: dig and discard 5 cm (2") of topsoil

For lawns: take the sample at a depth of 5 to 15 cm (from

2" to 6").

For other plants (flowers, vegetables, shrubs): from 20 to

40 cm of depth (8" to 16").

For trees: Samples from 20 to 60 cm of depth (8" to 24'’).

5) Mix all the samples together to obtain a homogeneous

mixture of soil, discarding stones and vegetable residues.

6) From this mixture, take the quantity of soil that you

need for the analysis.

7) Crumble the large chunks and distribute the soil sample

on paper or plastic to air dry it.

8) Use a small bar to crush the air dried sample and pass it

through the 2-mm soil sieve.

Range GR: 0 to 213 metric ton/ha

(0 to 95 ton/acre)

EES: 0 to 56.4 meq/100 g soil

Smallest Increment 3.8 metric ton/ha (1.7 ton/acre) as GR

1.95 meq/100 g soil as EES

Analysis Method Drop count titration

Sample Size 0.5 mL of soil

Number of Tests 100

Case Dimensions 235x175x115 mm (9.2x6.9x4.5")

Shipping Weight 883 g (31.1 oz.)

Note: GR is Gypsum Requirement and EES is Estimated Exchange-

able Sodium; meq/100 g is milliequivalent per 100 grams.

SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

25 mL

CHEMICAL REACTIONCHEMICAL REACTION

CHEMICAL REACTION

The extraction method is the saturated calcium sulfate method.

The Hanna Test Kit determines Gypsum Requirement by

titration of Calcium. The indicator chelates with Calcium ions

to form a red colored complex. As EDTA is added, calcium

complexes with it: the reaction endpoint is indicated by a

change in color of the indicator from red to blue.

HI 38083

Gypsum Requirement

Exchangeable Sodium

Test Kit

1 2

Instruction Manual 1

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Page 1 - Instruction Manual

Instruction Manualwww.hannainst.comDear Customer,Thank you for choosing a Hanna Product.Please read the instruction sheet carefully before using thet

Page 2

The chemicals contained in this kit may be hazardous ifimproperly handled. Read the relevant Health and SafetyData Sheet before performing this test.H

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Hanna-instruments HI 38083 Manuel d'utilisateur

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