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BACKGROUND


Difficulties and constraints faced by farmers in
Indonesia as to have no end. Start of the season that is sometimes hostile to the scarcity of fertilizers which we are all quite apprehensive. Even the recent rice import millions of tons more to make our farmers more suffer.

 

And the scarcity of fertilizers which makes the price of fertilizer to be almost unattainable this, there are people who use them for personal gain by making and distributing counterfeit fertilizers.

 

This situation is exacerbated by the inability of farmers to detect fake fertilizer bought before harvest has obviously failed miserably.

 

On the basis of the above things that it developed a way of testing a simple fertilizer in terms of equipment, how to use and price, but able to detect the quality of fertilizers and manure are particularly false.

 

Figure 1: Fertilizer Test Tool

 


WORKING PRINCIPLE TESTING

 

Basically the test method is a way colorimetry fertilizer refers to the Indonesian National Standard guidelines covering the types of fertilizers, among others: Triple Phospat Fertilizer, NPK, KCL, Urea, ammonium phospat and others.

 

The type of fertilizer nutrients that can be tested using this tool include:

o       Nitrogen Elements (N):

With the destruction of fertilizer samples using a strong acid, will produce ammonium salt compounds, and color development performed directly in the atmosphere Nesslerisasi base and bewarna complex will be obtained by a deep yellow color is proportional to the content of nitrogen in the sample.

 

o       Phospor Element (P):

Gynecology phosfat in manure samples can be determined based on the reaction with ammonium molbdovanadat yellow complex formed by a deep color that is proportional to the phosphor content.

 

o       Potassium Element (K):

Elements of KCl in chloride reacts with the compound fertilizer Argentum forming compounds in the form of a white precipitate is stable with the sharpness of the color is proportional to the potassium content in the sample.

 

PARTS OF THE EQUIPMENT

 

As for the parts of a simple fertilizer testing instruments include:

1.      ON / OFF switch

2.      Zero regulator lever

3.      Places examples

4.      Key test of voter types

5.      Digital aids test results

6.      Battery Check

 

FERTILIZER TEST EQUIPMENT SPECIFICATIONS

 

Principle of analysis : Colorimetry

Test term : N: 0 - 40%

P: 0 - 35%

K: 0 - 25%

Output : Absorb value in digital display

Batery power source : 2 x 9 Volt

Dimension : (5 X 14 X 17) cm

Number of samples : 0.1 to 0.2 grams

Packaging : (10 X 30 X 40) cm

 

Note:

The rate includes reagents for 100 times the test

Warranty 6 months

Training and guarantee the availability of reagents


TECHNICAL GUIDE

 

1.      Battery Check

Description:

1.      Close the Battery

2.      The red button to check battery

 

        Note the picture, battery location on the left side tool.

        Press the red button while the lights were observed adjacent to the left of the tool. When the red light means the battery must be replaced, otherwise if the flame of a green light means the battery is still good.

        For digital display battery, when it's time to replace the battery will see a small picture on the left below the digital display screen.

 

2.      Battery Replacement

Description:

A.     Battery Tray

In the above picture on the left side position close look tool battery and when the screw is released and then pulled the cap will be out two batteries and can instantly be replaced with a new battery.


3.      Atur angka nol

Description:

A. Smooth zero set button

B. Roughly zero set button

Basically, this tool is set down to zero (using the zero set buttons). But when there is a zero set value using the zero set buttons does not work then the zero sets can be assisted by a button located right next to the bottom of the tool itself is deliberately made somewhat hidden because it is very rarely used.


TEST EQUIPMENT LIST COMPLETENESS OF FERTILIZER / NPK METER

 

NO

EQUIPMENT NAME

TOTAL

USE

Tas besar

1

NPKmeter

1 unit

To measure the levels of elements N, P and K

2

Sample close lid

1 Pcs

To close an example in NPKmeter

3

Pumpkin drinks, 50 ml

2 Pcs

To accommodate the sample solution

4

Measuring cup, 10 ml

3 Pcs

For the color development solution

5

Kuvet, 8 ml

4 Pcs

Place solutions that have been colored samples

6

Nessler reagents 3 bottles, 30 ml

1 Pcs

Nitrogen color developer solution

7

Bottles of reagents 3 Amolvan 30 ml

2 Pcs

Phosfor color developer solution

9

Argentum bottles of reagents 2

1 Pcs

Development of color / sedimentation

10

Soda bottles of reagents 4, 10 ml

1 Pcs

Creating base suasanan

11

Muller porcelain

1 Pcs

Muller fertilizer samples to 80 mesh

12

Porcelain mortar

1 Pcs

Places penghalusnan fertilizer samples

13

Measuring spoon for example, 0.1 g

2 Pcs

Measuring the sample until full, then diperes

14

Rubber pipette

5 Pcs

To measure 0 to 10 drops of reagents

15

Measuring pipette, 1 ml

1 Pcs

For measuring sample solution between 0 to 0.5 ml

16

Lantern

1 set

To heat the sample in a test tube, using a spirit lamp on a wooden penjepi

17

NPKmeter Leaflets

1 sheet

Socialization of NPKmeter

18

Hint Phosfat total employment test

1 set

Guidelines for examination phosfat total

19

Test work instructions Phosfat soluble citric acid

1 set

Examination guidelines citric acid soluble phosfat

20

Nitrogen test work instructions

1 set

Guidelines for the examination of nitrogen element

20

Potassium test work instructions

1 set

Guidelines for the examination of nitrogen element

21

Phosfat test calibration curves

1 set

Calibration and calculation Phosfat

22

Nitrogen test calibration curves

1 set

Calibration and calculation of nitrogen

22

Potassium test calibration curves

1 set

Calibration and calculation of Potassium

23

List completeness NPKmeter tools

1 set

Check list

Small bag

1

Test tube, 20 ml

2 Pcs

To dissolve the sample by heating

2

Wood clamps

2 Pcs

To clamp the heating tube

3

Aqua Bottle (AMDK)

 

To dissolve or dilute the sample and washing the glass tool.

4

Asitrat bottle of reagents 1

500 ml

Citric acid solution for dissolving 2% phosfat

5

Asnitrat bottle of reagents 1

50 ml

Phosfat elements to dissolve the total

6

Asulsilat bottle reagents 1

250 ml

To dissolve the element nitrogen

7

Asklorida bottle reagents 2

50 ml

Phosfat elements to dissolve the total

8

Plastic bags Asitrat reagents

10 x 10 gr

Make your own solution of citric acid 2% (each bag of reagents dissolved in a bottle filled with water asitrat and Aqua until full)

9

Plastic bags Tio reagents 2

20 gr

Help dissolve the element nitrogen

10

9 Volt Adapter

1 Pcs

To replace the battery with AC Power

11

Glass funnel

1 Pcs

Move the solution into a pumpkin drinks

 

PROCEDURE FOR DETERMINING KANDUNGAN PHOSFOR
DISSOLVED IN CITRIC ACID

 

1)      PURPOSE : To determine levels of soluble Phosphorus 2% citric acid as P2O5

2)      REFERENCE : SNI. 02 - 3776 to 1995

3)      PROCEDURE :

(a)         Principle:

P2O5 levels are determined by Colorimetry, dissolved Ortho Phosphate

Ammonium Molibdovanadat reacted with complex compound Molibdovanadat phosphoric acid yellow.

 

(b)         Reagents:

        Reagents 1. Asitrat (Citrate acid solution 2%).

        Reagents 3 Amolvan (Ammonium Molibdovanadat)

        Water Supply in Package (AMDK)

 

(c)          Equipment:

        Measuring spoons

        Lumpang porcelain

        Pumpkin drinks 50 ml

        10 ml glass measuring

        Measure 1 ml pipettes

        NPK meters

 

4)      HOW TO WORK:

(a)    Preparation of sample solution.

Measuring a spoonful of soft samples (80 mesh pass) and diperes, inserted into the mortar, add gradually 1 Asitrat reagents with crushed, then poured into 50 ml measuring flask, rinsed several times to clean mortar.
Reactant solution added with 1 Asitrat to mark lines 50 ml, shaken for 3 minutes. Muted until the top of clear or filtered with filter paper.

(b)   By using measuring pipettes, pipette 0.5 ml of sample solution into a 10 ml measuring cup.

(c)    added by AMDK 5 ml of water, then add 10 drops of reagents 3 Amolvan, then dilute with water until the mark lines AMDK (10 ml) and shaken.

(d)   Blank solution:

              Put 10 drops of solution 1 Asitrat reagents into 10 ml measuring cup.

              Added a AMDK 5 ml of water, then add 10 drops of reagents 3 Amolvan, then added with water to mark the line AMDK (10 ml) and shaken.

(e) The use of NPK meters:

(1.)       Prepare a calibration curve phosfor dissolved in citric acid

(2.)       Switch the ON / OFF Button to ON's

(3.)       Pour the solution into kuvet blank, and then inserted into the sample and closed.

(4.)       Adjust the ZERO key is set so that the digital display shows the number 00.0.

(5.)       Kuvet blank kuvet replaced with others that have been filled with examples.

(6.)       After the closing, note the number that appears on the digital display.

(7.)       Apply also for other examples.

 

5)      CALCULATION:

Levels of acid-soluble Phosfor Citrate 2%

as P2O5, (%) see on the calibration curve

 

PROCEDURE FOR DETERMINING THE TOTAL PHOSFOR KANDUNGAN

 

1)      PURPOSE : To determine levels of total phosphorus as P2O5

2)      REFERENCE : SNI. 02 - 2803 to 2000

3)      PROCEDURE :

(a)    Principle:

P2O5 levels are determined by Colorimetry, Ortho Phosphate dissolved Molibdovanadat reacted with ammonium compounds to form complexes Molibdovanadat phosphoric acid yellow.

(b)   Reagents:

        1 Asklorida reagent (acid chloride)

        2 Asnitrat reagents (nitric acid)

        Reagent 3 Amolvan (Ammonium Molibdovanadat)

        Water Supply in Package (AMDK)

(c)    Equipment:

        Measuring spoons

        Lumpang porcelain

        Pumpkin drinks 50 ml

        10 ml glass measuring

        Measure 1 ml pipettes

        NPK meters

4)      HOW TO WORK:

Preparation of sample solution.

(a)    Taken a measuring spoon which has fine examples (80 mesh pass), then diperes, then put into a test tube, added with 1 ml of reagents 2 and 10 drops asnitrat reagents 1Asklorida.

(b)   Heat lamps above spritus until white smoke comes and almost dry.

(c)    Chill, then enter into a 50 ml measuring flask, rinsed with water 2 - 3 times.

(d)   Added water until the mark lines AMDK 50 and beaten up evenly.

(e)    Then left until the solution became clear or filtered with Kerta filtering.

(f)     Pipette 0.5 ml of sample solution into a 10 ml measuring cup.

(g)    Added with AMDK 5 ml of water, then add 10 drops of reagents 3 Amolvan, then dilute with water until the mark lines AMDK (10 ml) and shaken.

(h)    Blank solution: Added with AMDK 5 ml of water into 10 ml measuring cup, then add 10 drops of reagents 3 Amolvan, then added with water until the mark lines AMDK (10 ml) and shaken.

(i)      The use of NPK meters:

(1.)  Prepare a calibration curve for total phosfor.

(2.)  Button ON / OFF in ON it.

(3.)  Pour the solution into kuvet blank, and then inserted into the sample and closed.

(4.)  Adjust the ZERO key is set so that the digital display shows the number 00.0.

(5.)  Kuvet blank kuvet replaced with others that have been filled with examples.

(6.)  After the closing, note the number that appears on the digital display.

(7.)  Apply also for other examples.

 

5)      CALCULATION:

Levels of total Phosfor as P2O5, (%) =

Readings X factor = ... P2O5 (%)

 


PROCEDURE FOR DETERMINING THE VALUE OF TOTAL NITROGEN
 
1)      PURPOSE : To determine levels of total nitrogen fertilizers in the sample
2)      REFERENCE : SNI. 02 - 2803 to 2000
3)      PROCEDURE :
(a) Principle:
Nitrogen in the sample is hydrolyzed with a mixture of salicylic acid sulfate acid to form ammonium sulfate compounds in the atmosphere of salicylate which bases to form a yellow complex to dark yellow with Nessler reagents.
Reagents:
        1 Asulsilat reagents (sulfuric acid solution - salicylate)
        Reagents 2 TIO (Tio Sodium sulfate, Na2S2O3. 5 H2O)
        3 Nessler reagent
        4 Reagents Soda (Narium hydroxide solution, NaOH 40%)
        Water AMDK.
(b)   Equipment:
        Measuring spoons
        Pumpkin Measure 50 ml
        1 ml measuring pipettes
        Tubes reaction
        10 ml glass measuring
        Lumpang Porcelain
 
4)      HOW TO WORK:
(a)    Take a measuring spoon which has been refined example diperes, then inserted into the test tube.
(b)   Add 5 ml of reagents 1 Asulsilat shaken thoroughly and let the night.
(c)    The next day, add two points of reagents Tio, and then heated at a low temperature until the bubbles out. Raise the temperature for 30 minutes and then allowed to cool.
(d)   Once cool, add 5 ml of water AMDK, moved into a 50 ml flask measures (rinsed 2-3 times), shaken and added AMDK water again until the 50 ml mark lines, leave until the solution was clear. (Called solution A)
(e)    Take 1 ml of solution A, is put into 10 ml measuring cup, add water to exactly 10 ml. (called solution B)
(f)     Take 1 ml of solution B, is put into 10 ml measuring cup, add water to 5 ml, then added one drop of reagents and shaken soda 4.
(g)    Added 2 drops of Nessler reagents, and add water until the mark lines AMDK 10 ml and then shaken.
(h)    Do the work f - h, but no solution as the sample blank solution.
(i)      The use of NPK meters:
(1.)  Prepare a calibration curve of nitrogen.
(2.)  Press the ON / OFF
(3.)  Pour the solution into kuvet blank, and then inserted into the sample and closed.
(4.)  Adjust the ZERO key is set so that the digital display shows the number 00.0.
(5.)  Kuvet blank kuvet replaced with others that have been filled with examples.
(6.)  After the closing, note the number that appears on the digital display.
(7.)  Apply also for other examples.
 
5)      CALCULATION:
Nitrogen levels Total, (%) =
Look at the formula of calibration curve
 

PROCEDURE FOR DETERMINING POTASSIUM-PACKED
 
1)      PURPOSE : To determine levels of potassium from KCl
2)      REFERENCE : SNI. 02 - 3776 to 1995
3)      PROCEDURE :
(a)    Principle:
K levels determined Colorimetry, Potassium dissolved reagents reacted with Ag Nitrate AgCl will form compounds that form stable white sediment.
(b)   Reagents:
        Reagents 2 Argentum
        Distilled Water
(c)    Equipment:
        Measuring spoons
        Lumpang porseli
        Pumpkin drinks 50 ml
        10 ml glass measuring
        Measure 1 ml pipettes
        NPK meters
 
4)      HOW TO WORK:
(a)    Preparation of sample solution
Measuring a spoonful of soft samples (80 mesh pass) and diperes, inserted into the mortar, add a little distilled water with a crushed, then poured into 50 ml measuring flask, rinsed several times to clean mortar.
Added with distilled water until the mark lines 50 ml, shaken for 3 minutes. Muted until the top was clear.
(b)   By using measuring pipettes, pipette 0.5 ml of sample solution into a 10 ml measuring cup.
(c)    Added with 4 drops of reagents Argentum, then dilute with distilled water to mark the line (10 ml) and shaken.
(d)   Blank solution:
Added with 5 ml of distilled water, then add 4 drops of reagents Argentum, then added with distilled water to mark the line (10 ml) and shaken.
(e)    The use of NPK meters:
(1.)  Prepare a calibration curve of potassium.
(2.)  Press the ON / OFF.
(3.)  Pour the solution into kuvet blank, and then inserted into the sample and closed.
(4.)  Adjust the ZERO key is set so that the digital display shows the number 00.0.
(5.)  Kuvet blank kuvet replaced with others that have been filled with examples.
(6.)  After the closing, note the number that appears on the digital display.
(7.)  Apply also for other examples.
 
5)      CALCULATION:
Potassium levels of K (%) see on the calibration curve