Saturday, 27 July 2013

Polyester Fiber Filling compound

I am thinking of using auto body filler for making tanks .not sure

It is two component Polyester Fiber Filling compound with excellent Adhesion to plastic bumpers. It is fast drying & easy to sand even days after application. It is highly reactive & has a high viscosity. Extremely easy to sand with P120-240 Grit Paper for perfect Pinhole free finish. It does not clog sand paper. Due to its high elasticity it has an excellent mechanical resistance.


Polyester Fiber Putty is recommended for Automobile refinish of metal body & especially Plastic bumpers & Auto fiber body parts.

Marine Fillers and Putty for filling pinholes, scratches and other surface defects on fiberglass and gel coats. Kardol Epoxy Glue may be used to repair tanks, pipes, windshields, floors, fiberglass, aluminum boats, concrete, and styrofoam.

A filling two component polyester compound, suitable for metallic, wooden and polyester surfacesPacking 180gm (Resin 172gm + bp paste hardener 8gm) 1kg (Resin 960gm + bp paste hardener 40gm)


Wednesday, 24 July 2013

understanding different resins

I wanted to make my own fiberglass tank but am confused with all the different resins out there


In the marine industry, liquid plastics, namely epoxies, polyesters, and vinylesters are used to saturate (wet out) the fibers of wood, glass, kevlar amarid, or carbon to form a fiber reinforced plastic (FRP).  To create a quality part, adhesion to the fibers is the most important factor.  Not all resins keep their grip on fibers equally.

Epoxy resin is known in the marine industry for its incredible toughness and bonding strength.  Quality epoxy resins stick to other materials with 2,000-p.s.i. vs. only 500-p.s.i. for vinylester resins and even less for polyesters.  In areas that must be able to flex and strain WITH the fibers  without micro-fracturing, epoxy resins offer much greater capability. Cured epoxy tends to be very resistant to moisture absorption.  Epoxy resin will bond dissimilar or already-cured materials which makes repair work that is  very reliable and strong.  Epoxy actually bonds to all sorts of fibers very well and also offers excellent results in repair-ability when it is used to bond two different materials together. Initally, epoxy resin is much more difficult to work with and requires additional skill by the technicians who handle it.


GP Resin
We specialize in providing an impeccable range of GP Resin. This general purpose resin finds its varied application in fiberglass plants, and marine recreational vehicles. This resin type is generally used because of its features such as low viscosity, medium curve and fast wet out. Available in colors, this range is used in varied forms by different industries. We are offering this resin in a very competitive pricing and in a legitimized manner.


ISO Resin
Our company is indulged in manufacturing a qualitative range of ISO Resin. This resin type finds its wide application in the manufacturing of a number of products such as tanks, pipes, containers, tools for the storage & protection of various corrosive materials and other products that require high mechanical strength, corrosion resistance and better durability. We provide our industrial patrons with this qualitative resin in a very economical pricing.


Roof Life Resin
We are a coveted firm engaged in the manufacturing of quality Roof Life Resin which is in great demand due to its diversified features. This range of resin has been specially fabricated to have a long term durability and provide optimal performance. This roof life resin is generally used in waterproofing of flat or inclined roofs. Due to this use, we offer these roof resins in translucent and decorative patterns. Some of its major features are:

UV stabilized resin
Durable
Perfect finish


Vinyl Ester Resin
Our offered range of Vinyl Ester Resin has been manufactured using best quality resin which has been procured from reliable vendors. Our this resin has been widely acclaimed by the users for its features such as strength and sturdiness as well as low resin viscosity of approximately 200 cps which is a bit lower than 500cp of polyester and 900cps of epoxy. Its major application is in a number of glasair and glastar kit planes along with being used in marine equipments.



Pigment Resin
We are coveted in supplying and manufacturing a wide range of Pigment Resin to our varied clients. This pigment resin is widely applies in making & composition of various kind of products such as paints, inks, plastic, glass, synthetic fibers, ceramics, colored cement products, textiles and cosmetics. We are also into manufacturing polymer base concentrate such as LDPE/ LLDPE/ PVC. These pigments are available with us in a variety of colors and shades that are all use din addition to various plastic and other products.


Vinylester resins are stronger than polyester resins and cheaper than epoxy resins. Vinylester resins utilize a polyester resin type of cross-linking molecules in the bonding process.  Vinylester is a hybrid form of polyester resin which has been toughened with epoxy molecules within the main moleculer structure.  Vinyester resins offer better resistance to moisture absorption than polyester resins but it's downside is in the use of liquid styrene to thin it out (not good to breath that stuff) and its sensitivity to atmospheric moisture and temperature.  Sometimes it won't cure if the atmospheric conditions are not right.  It also has difficulty in bonding dissimilar and already-cured materials.  It is not unusual for repair patches on vinylester resin canoes to delaminate or peel off.   As vinylester resin ages, it becomes a different resin (due to it's continual curing as it ages) so new vinylester resin sometimes resists bonding to your older canoe, or will bond and then later peel off at a bad time. It is also known that vinylester resins bond very well to fiberglass, but offer a poor bond to kevlar and carbon fibers due to the nature of those two more exotic fibers.  Due to the touchy nature of vinylester resin, careful surface preparation is necessary if reasonable adhesion is desired for any repair work. 
Polyester resin is the cheapest resin available in the marine industry and offers the poorest adhesion, has the highest water absorption, highest shrinkage, and high VOC's.  Polyester resin is only compatible with fiberglass fibers and is best suited to building things that are not weight sensitive.  It is also not tough and fractures easily. Polyesters tend to end up with micro-cracks and are tough to re-bond and suffer from osmotic blistering when untreated by an epoxy resin barrier to water.  This is really cheap stuff.

Friday, 5 July 2013

Injection of brooders

Injection of brooders: Commercially available synthetic hormones, viz. ovaprim (Syndel Laboratories
Canada; sGnRH-a + domperidone) and ova tide (Hemmo Pharma, Mumbai; mLHRH-a + domperidone)
are effective in inducing spawning in the Deccan mahseer.
Ovatide For Fish Spawning
http://www.indiamart.com/hemmopharma/
http://www.lrrd.org/lrrd22/4/shar22069.htm
Hemmo Pharmaceuticals Pvt.ltd.
Corporate Office
113,114 & 115, Turf Estate ,
3/65, Off Dr. E. Moses Road,
Mahalaxmi, Mumbai-400 011, India.
Tel: +91-22-4354 6200
Fax: +91-22-4354 6201
Email: hemmoin@mtnl.net.in

The female broods of 120-140 g weight range were selected for induced breeding. Ovatide was used as hormone for induced breeding of fish. It was procured from the firm Hemmo Pharma, Mumbai. It is available in liquid form in bottles. Three doses of ovatide viz. 0.6, 0.8 and 1.0 ml per kg body weight were adopted. The males and females were kept separately. Injections were administered intramuscularly, in the dorso-lateral region of the female body of female brood fish. This enabled the researchers to find out the optimum dose, required for optimum spawning of the fish

Induced Breeding of Fishes with Ovatide

Ovatide is an indigenous, cost-effective and new hormonal formulation for induced breeding of fishes.
It is also effective in breeding major carps. The doses for females are 0.20-0.40 ml/kg for rohu and mrigal, 0.40-0.50 ml/kg for catla, silver carp and grass carp
The dosages for males are 0.10-0.20 ml/kg for rohu, mrigal, 0.20-0.30 ml/ kg for catla and 0.20-0.25 ml/kg for silver carp and grass carp.


                                                           

 The Advantages of Ovatide:

It is cost-effective hormonal preparation.
It gives high fertilisation and hatching percentage (85-95%).
It is increases egg production through complete spawning.
It produces healthy seed.
It is easy to inject due to its low viscosity.
It does not cause adverse effects on brood fish after injection.
It can be administered in a single dose to brooders.
It can be stored at room temperature.
It is quite effective even under climatic adversities and ovatide is available in the market as 10 ml vial, which costs Rs. 300.

fish varieties for fish farming

Indian major carps – rohu, catla and mrigal
Exotic carps – silver carp, grass carp, common carp
Catfish – magur, ari, singhi.
Tilapia – also known as kowai.
Trout – golden mahseer, silver mahseer, silver grey mahseer and black mahseer.


India Cyprinus carpio, Ctenopharyngodon idellus, Hypophthalmichthys molitrix,, Aristychthys
nobilis, Labeo rohita, Catla catla, Cirrhinus mrigala

Thursday, 4 July 2013

A Handbook of fish farming 2nd Ed HB

http://www.nphindia.com/index.php?p=sr&Uc=9788185375946
र 506.00

CONTENTS OF THE BOOK
Chapter 1 Introduction

Chapter 2 Culturaple Fish

2.1 Desirable Characteristics in a Cultured Organism 
2.1.1 Reproductive Habits 
2.1.2 Requirements of the Eggs and Larvae 
2.13 Feeding Habits 
2.1.4 Adaptability to Crowding 
2.2 Fresh Water Fishes 
2.3 Salt Water Fishes 
2.4 Exotic Fishes 
2.5 Major Carps
2.5.1 Catla catla (Catla) 
2.5.2 Labeo rohita (Rohu)
2.5.3 Cirrhina mrigala (mrigala)
2.5.4 Ctenopharyngodon idillus (Grass carp)
2.5.5 Hypophthalmichthys molitrix (Silver carp) 
2.5.6 Cyprinus carpio (Common carp)

Chapter 3 Fish Breeding

3.1 Type of Breeding 
3.1.1 Natural Breeding Habits 
3.1.2 Bundh Breeding of Indian Major Carps 
3.1.2.1 Dry Bundh 
3.1.2.2 Wet Bundh
3.1.2.3 Bundh Breeding Technique
3.1.2.4 Collection and Hatching of Eggs
3.1.2.5 Factors Influencing Spawning of Carps in Bundhs
3.1.2.6 Improved Features of Dry Bundhs in Recent Years
3.1.2.7 Problems in Bundh Breeding
3.2 Fish Seed Colledion From Natural Resources 
3.3 Construction of Fish. Seed Farm
3.3.1 Criteria for Site Selection
3.3.2 Topography
3.3.3 Soil Type
3.3.4 Water Supply
3.3.5 Planning and Construction
3.3.6 Embankment
3.3.7 Size of Ponds
3.3.8 Outlet and Inlet 
3.3.9 Nursery Ponds
3.3.10 Rearing Ponds
3.3.11. Stocking Ponds
3.3.12 Feeding Pits
3.3.13 Hatching Pits
3.3.14 Breedig Cistern
3.3.15 Breeding Cemented Cisterns
3.3.16 Bundh Type of Tanks
3.3.17 Marketable Tanks
3.3.18 Hospital Ponds
3.4 Fish Seed Production by Induced Breeding
3.4.1 Hormone Injection Technique
3.4.2 Breeding Technique
3.4.3 Hatching of Eggs
3.4.4 Environment and Survival of Fish and Spawn
3.4.4.1 Temperature
3.4.4.2 Dissolved Oxygen Concentration 
3.4.4.3 pH and Alkalinity
3.4.4.4 Silt
3.5 Hatchings
3.5.1 Circular Cistern Hatchery
3.5.2 Fish Hatchery and Breeding Unit,
(ClEF D-80 Model)
3.5.3 Modern Carp Hatchery, (CIFE D-81 Model)
3.6 Rearing of Spawn
3.6.1 Pre-stocking Management
3.6.2 Stocking
3.6.3 Post - stocking Management
3.7 Assessment of Quantity
3.8 Size for Stocking and Harvesting
3.9 Quality of Fish Seed
3.1 0 Transport of Fish Seed
3.10.1 Open System
3.10.2 Closed System

Chapter 4 Management of Fish Pond

4.1 Introduction 
4.2 Aquatic Plants and Their Control
4.2.1 Mechanical Control of Weeds
4.2.2 Chemical Control of Weeds
4.2.3 Biological Control of Weeds
4.3 Fish Enemies and Their Control
4.3.1 Predatory Insects 
4.3.2 Predatory and Weed Fishes
4.3.3 Miscellaneous Predators
4.4 Fish Diseases and Their Control 
4.4.1 Environmental Stress and Disease of Fish
4.4.1.1 Temperature
4.4.1.2 Light 
4.4.1.3 Dissolved Gases 
4.4.1.4 pH, Ammonia and Bicarbonates 
4.4.1.5 Acidity
4.4.1.6 Nutritional Deficiency Diseases
4.4.1.7 Other Parameters
4.4.1.8 Infectious Bacterial piseases of fish
4.4.2 Control Measures
4.4.3 Epizootic Ulcerative Syndrome (EUS) 
4.4.4 Infectious Viral Diseases of Fishes
4.4.5 Infectious Fungus Diseases
4.4.6 Infectious Protozoan Diseases
4.4.6.1 Ceratomyxa Shasta
4.4.6.2 Myxosomia Cerebralis
4.4.6.3 Ichthyopthirisis Multifilis
4.4.7 Diseases Caused by Monogenetic Trematodes 
4.4.8 Diseases Caused by Digenetic Trematodes 
4.4.9 Diseases CausM by Cestodes
4.4.10 Diseases Caused by Nematodes
4.4.11 Diseases Caused by Acanthocephala 
4.4.12 Diseases Caused by Hirudinea
4.4.13 Diseases Caused by Crustaceans
4.5 Manuring of Ponds
4.5.1 Inorganic Fertilizers
4.5.1.1 Lime Fertilizers
4.5.1.2 Phosphate Fertilizers
4.5.1.3 Nitrogen Fertilizers
4.5.1.4 Potassium Fertilizers
4.5.1.5 Magnesium Fertilizers
4.5.1.6 Trace Element Fertilizers
4.5.2 Organic Manures
4.6 Food and Feeding of Culturable Fishes
4.6.1 Food of Carp Fry
4.6.2 Food of Carp Fingerlings
4.6.3 Food of Carr Yearling and Adults
4.6.4 Artificial Feeding of Carps
4.6.5 Relation Between Food and Growth
4.7 Nourshing Capacity of Ponds
4.7.1 Density of Nursery Ponds
4.7.2 Density of Rearing Ponds
4.7.3 Density of Stocking Ponds
4.8 Fish Upkeep and Maintenance of Ponds 
4.8.1 Care of Fish
4.8.2 Care of Ponds
4.8.3 Fish Pond Improvements
4.8.4 Fish Pond Record
4.8.5 Fish Yield

Chapter 5 Economics of Fish Culture and Integrated Fish Farming

5.1 Economices of Composite Fish Culture
5.2 Fish – cum – Paddy Culture
5.3 Fish – cum – Poultry Farming 
5.4 Fish – cum – Duck Farming
5.5 Fish – cum – Pig Farming
5.6 Fish – cum – Dairy Farming
5.7 Fish – cum – Horticulture
5.8 Fresh Water Prawn Culture
5.9 Monoculture of Brackish Water Fish
5.10 Composite Brackish Water Fish Culture
5.11 Poly culture (Fish cum Prawn)
5.12 Magur Fish Culture 

5.13 Ornamental Fish Hatchery

Fisheries

Integrated farming systems in Assam