Chemical values

 

In order to simplify the choice of coir (Cocopeat)  products Pelemix has          defined 4 classes  of coir. By controlling all stages of production and having the ability to

treat the coir (Cocopeat), Pelemix has the ability to guarantee  treated products

as well as  non treated products. Pelemix's experience enables Pelemix

to recommend the proper coir (Cocopeat) class for each crop and grower.

 

 

Classification Table


Concentration in the 1:1.5 vv method

Optimum

Treated

Washed

Regular

E.C. (mS/cm)

< 0.6

0.6 – 1.0

1.1 - 1.5

1.6 – 2.0

NH4+ + NO3- (mmol/liter)

< 8.0

< 9.5

< 11.0

< 15.0

K+ (mmol/liter)

< 6.0

< 6.0

< 6.0

< 6.0

Na+ (mmol/liter)

< 1.7

< 2.5

< 3.5

< 4.5

Ca++ (mmol/liter)

< 3.0

< 6.0

< 6.0

< 6.0

Mg++ (mmol/liter)

< 3.0

< 3.0

< 3.0

< 3.0

NO3- (mmol/liter)

< 6.0

< 7.5

< 9.0

< 11.0

Cl- (mmol/liter)

< 1.7

< 2.5

< 3.5

< 4.5

SO4- -(mmol/liter)

< 3.0

< 6.0

< 6.0

< 6.0

P - - (mmol/liter)

<1.5

< 1.5

< 2.0

< 3.0

 

 

 

1:1.5 vv BaCl2 Analyze

Optimum

Treated

Washed

Regular

Na (mmol/liter) in BaCl2

< 1.7

< 2.5

< 3.5

< 4.5

Na (mmol/liter) in BaCl2 minus Na in H2O

≥ 1.0

≥ 1.0

≥ 1.0

≥ 1.0

K (mmol/liter) in BaCl2

< 6.0

< 6.0

< 6.0

< 6.0

K (mmol/liter) in BaCl2 minus K in H2O

< 2.0

< 2.0

< 2.0

< 2.0

Or:

Ca (mmol/liter) + Mg (mmol/liter) in H2O

≥ 1.0

≥ 1.0

≥ 1.0

≥ 1.0

 

 

 

 

pH Class

pH H2O

Optimum, Treated

5.0 – 6.0

Washed, Regular

6.0 – 7.0

 

 

 

Trace elements

Concentration in the 1:1.5 vv method

Maximum

Fe (µmol/liter)

< 40

Zn (µmol/liter)

< 10

Cu (µmol/liter)

< 5

Mn (µmol/liter)

< 10

B (µmol/liter)

< 40

 

 

 

Heavy Metals

Element

Maximum

Cr (mg/kg of dry material)

< 50

Ni (mg/kg of dry material)

< 10

Cu (mg/kg of dry material)

< 24

Zn (mg/kg of dry material)

< 73

As (mg/kg of dry material)

< 21

Cd (mg/kg of dry material)

< 0.72

Hg (mg/kg of dry material)

< 0.23

Pb (mg/kg of dry material)

< 65

 

Pelemix's method for Coir (Cocopeat) extraction

  1. The compressed Coir (Cocopeat) is reconstituted to its full volume by adding distilled water in the required amounts. The moisture should be such that when a gentle squeeze is given, few drops of water ooze out between the fingers. The reconstituted wet sample is then mixed well and left overnight.
  2. From the above material 60 ml of the sample is placed in a measuring cylinder. A gentle pressure of 10 kPa is applied over this while filling. Alternatively a measuring device with a provision to apply this pressure can also be used to achieve consistency.
  3. This sample is emptied into a conical flask to which 90 ml of distilled or de-ionized water is added. The flask is well shaken by placing it on a mechanical shaker (rotating at 10 rev/min) for 15 minutes. Allow it to stand for 30 minutes and filter the extract through a low-mesh filter paper.

 

 

 
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