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Astrra Chemicals
Astrra Chemicals


Zeolite Silicates

Our product range includes a wide range of calcined zeolite, 3a zeolite, zeolite ( aqua culture ) and 4a zeolite.

Calcined Zeolite

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Calcined Zeolite
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Approx. Rs 48 / KgGet Latest Price

Product Details:
Minimum Order Quantity50 Kg
Packaging Size25 kg/bag
Packaging TypeHDPE Bag
BrandAstrra Chemicals
Ph4.5 to 6.5
Moisture1% (Max)
Melting point1735 Deg.C

Certificate of analysis:

Appearance

White Powder

Brightness(ISO)

82+/-0.5%

Loss on ignition

14%(Max)

Coarse particle on 53

Micron IS SIEVE (Max)

0.05%(Max)

Ph (of 20% aqueous solution)

4.5 to 6.5

Particles less than 2 micron

68% w/w (Min)

Bulk density

0.8%+-0.1 gm/cc

Moisture

1%(Max)

Melting point

1735 Deg.C

Specific gravity (H2O=1)

2.63

 

Chemical analysis (w/w)%:

Silica

45.17

Ferric Oxide

0.50(Max)

Alumina

37.59

Titanium Dioxide

0.50

Calcium Oxide

0.22

Magnesium Oxide

0.12

Sodium Oxide

0.31

Potash

0.07

 

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3A Zeolite

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3A Zeolite
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Approx. Rs 400 / KilogramGet Latest Price

Product Details:
StateSolid
BrandAstrra Chemicals
Bed Crushin strength90% min.
Loss on attrition0. 3% max.
Pellets Size1.4 - 3.0 mm. dia. beads

Physical Properties:

Tapped bulk density, Kg/m3

650 – 700

720

Static equilibrium water adsorpation capacity

15 RH: 17 – 20%

75 RH: 22 – 24%

18. 3%

24. 1%

Free Moisture

2% max.

2% max.

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Zeolite ( Aqua Culture )

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Zeolite ( Aqua Culture )
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Approx. Rs 32 / KGGet Latest Price

Product Details:
Minimum Order Quantity100 KG
Packaging Size25 kg/bag
Packaging TypeHDPE Bag
StatePowdered
BrandAstrra Chemicals

Zeolite is a naturally occuring deposit (i.e. rock!) that has a fairly unique structure which is highly porous whilst also allowing for rapid uptake and loosing of charged particles. Therein lies the relevance of zeolite to aquaculture; when placed in water zeolite filters ammonia out of the water and holds it inside its' porous structure. As ammonia is highly toxic to fish this is a very useful way of reducing ammonia concentration in water. The ability of zeolite to absorb ammonia is not unlimited and once it reaches saturation it can be placed into a salt water solution to be recharged. Here it conviniently exchanges the ammonia for sodium, making it again capable of absorbing further ammonia when moved out of the salt solution to a freshwater solution. This charging and removing of ammonia from the zeolite can be repeated many times prior to the zeolite become clogged and useless. Zeolite is often used when transporting fish for a period of several hours to avoid the ammonia accumulation in the bags or transport tank from reaching toxic levels. This is probably the most common function of the substance. It can also be used when setting up a new recirculating system or tank to maintain low ammonia levels while the biofilter is maturing. Occassionally zeolite is used in reef aquarium to polish the water of unwanted particles. It is illogical to use zeolite in a biofilter as the filter media because the ammonia sponge capacity will reach saturation, whereafter no more ammonia will be taken up. At this point the zeolite will be colonised by filter bacteria and function just as any other porous biofilter media. The danger exists though that at a point in time you may decide to treat the tank with salt to kill off a parasite that has entered the tank or pond and the ammonia will then be released from the zeolite into the water stressing the fish. Be aware when purchasing zeolite that not all zeolites are equal. The geomorphological conditions present at the time when it formed determine the chemical structure of the zeolite, and this in turn decides whether they have an affinity for ammonia or other salts such as calcium or magnesium.

 

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4A Zeolite

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4A Zeolite
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Approx. Rs 400 / KilogramGet Latest Price

Product Details:
Minimum Order Quantity5 Kilogram
BrandAstrra Chemicals
Bed Crushin strength90% min.
Loss on attrition0. 3% max.
Pellets Size1 .5 - 3. 0 mm beads

Physical Properties:

Tapped bulk density, Kg/m3

650 – 700

750 – 800

Static equilibrium water adsorpation capacity

15 RH: 18 – 21%

75 RH: 22 – 25%

18 – 21%

22 – 25%

Free Moisture

2% max.

2% max.

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