AquaTech

News 2005

To get this news regularly free, just send an e-mail with the word "subscribe" in the subject line.

To be removed from our mailing list just reply to the message with the word "remove" in the subject line.

Hello,

here are the actual AquaTech NEWS and our new offer of the 4th quarter 2005:

Water quality measured the easy way, with the following waterproof, microprocessor based, handheld meters:

1 pH-value and temperatur Scan-Tester, EUR 190,-
1 Redox-Potential Scan-Tester, EUR 190,-
1 Conductivity Scan-Tester, EUR 190,-

New Products:

Phosphat Colorimeter, Box-set, EUR 190,-
With this new photometer you can easily display direct and fast the PO4 content in mg/l. The measurement ranges between 0,00-2,50 mg/l with a resolution of 0,01 mg/l and an accuracy of 1,00 ±0,04 mg/l. The battery operated meter with a weight of 380 g has an automatic calibration and shut of after 10 minutes of inactivity. The delivery includes the meter and battery in the transport box complete with probes and 100 test sets.

All prices in Euro ex works, VAT excl.

Book Tips:

Analysis of Solids in Natural Waters by Thomas R. Crompton. Hardcover (1996).
The presence of toxic organic and inorganic substances in rivers and oceanic sediments is in part due to man-made pollution. Their monitoring by chemical analysis of oceanic, estuarine, and river sediments or of organisms living in the respective ecosystems are of utmost importance. The purpose of this book is to provide the chemist with all available information for the rapid development and proper carrying out of these methods of analysis. Crompton's book is the first book which covers all kinds of samples including living organisms.

Water Quality Control Handbook by E. Roberts Alley. Hardcover (2000).
This handbook is intended to provide industrial, governmental, and consulting environmental practitioners a quick reference guide to all major areas of water pollution control. Among the topics discussed are the physical, chemical, and biological characteristics of wastewater; monitoring, sampling, and testing methods; the modeling of the effects of pollutants on the environment; effective management, including the establishment of policies and proper documentation; applicable water pollution regulatory standards; and the theory, design recommendations, and practical suggestions for various water pollution control systems.

Pond Aquaculture Water Quality Management by Claude E. Boyd et al. Hardcover (1999).
The only hope of supplying the world's ever-increasing demand for aquatic food products is through aquaculture, and the vast majority of this is conducted in ponds. Although pond aquaculture may appear at first to be an archaic method of growing aquatic animals, it is one that is consistently profitable when the pond is managed properly. The most important aspect of pond management is the maintenance of adequate environmental conditions for good growth and health of the animal under culture. Water quality in ponds also extends into the areas of environmental protection and food quality and safety, which are increasingly important in today's world. This book provides the most complete, up-to-date account of water quality and its management in aquaculture ponds. It provides background information on the physical, chemical, and biological environment of pond aquaculture, and illustrates how the proper balance of these factors is the essential ingredient for successful production of fish and other aquatic animals. Management techniques for the control of water quality and productivity include liming, fertilization, mechanical aeration, water exchange, and the use of algicides and herbicides. The authors examine the effects of pollution on aquaculture and the validity of current criticisms by environmentalists. This book will be of great benefit to students, extension agents, policy-makers, government officials and the commercial aquaculture industry.

Standard Methods for Examination of Water & Wastewater by Arnold E. Greenberg et al. Hardcover (1999).
The bible of water analysis and THE book of standards! Comprehensive testing of all major pollutants, giving precise instructions for proceedures, preparation of studies as well as current reference data.
Every conceivable method for the chemical, biolgical and physical analysis of fresh, brackish and seawater, biological contaminants and pollutants, are covered in detail. Includes sampling techniques, statistical methods, laboratory apparatus and reeagents, safety setup and calibrations, determination of general water quality parameters, metals, automated analysis, toxicity tests for aquatic organisms,  aquatic botany (inclusive plankton sampling), and a special section on the identification of aquatic organisms with color plates.
Now in its 20th edition, this text presents significant improvements of methodology and enlarged its scope to include techniques suitable for examination of many types of samples encountered in the assessment and control of water quality and water pollution.

Just let us know if there is any special question,
until next year, nice greetings

Martin Hochleithner

Dear Reader,

here are the actual AquaTech NEWS and our new offer of the 3rd quarter 2005:

Fish harvesting made easy, with ...

Lifting net with automatic lock

This lifting nets can be used perfectly to harvest larger fish quantities gently from raising- or holding-units.
The fishes are harvested directly with the lifting net from cages, tanks or other systems where the fish are allready keeped in high density by using a cran (see picture). For opening the base of the net, simply the rope of the automatic lock is pulled, and the fishes are released gently.
The lifting net is available in sizes from 1,0 to 1,5 m diameter and different outfitts (just with 50 mm outer net, and with or without tapaulin inside, and with or without 10 mm inner net. It will be delivered completely with net frame, ropes and automatic lock.

1 m Ø Lifting net with tapaulin and outer net, EUR 990,-

Alternative:
Hand-Scoop Nets mounted in strong corrosion free D- or O- formed doubble frame with protection (without handle):

Ø or wide 40 cm, MS   5 mm, EUR 50,-
Ø or wide 50 cm, MS 10 mm, EUR 50,-
Ø or wide 60 cm, MS 15 mm, EUR 50,-
Ø or wide 70 cm, MS 20 mm, EUR 50,-

New:

Water pump with 5.7 kw Diesel Motor (3000 RPM), with E-start and key,
Capacity up to 96 m3/h, Suction height up to 8 m, Lifting height up to 31 m,
Tank volume 12 l, Dimensions (LxWxH) 65x48x73 cm, Weight 67 kg, EUR 990,-

Energy generator with 6.4 kw Diesel Motor (3000 RPM), sound isolated and air cooled, with E-start and key,
Generator power 4,2 kw (5.7 HP), 380 V + 230 V AC, 12 V DC,
Tank volume 15 l, Dimensions (LxWxH) 92x68x76 cm, Weight 165 kg, EUR 1.290,-

All prices in Euro ex works, VAT excl.

Please note that we have closed from 15. July to 15. August due to vaccation.
You can reach me during this time directly on my mobile phone +43/664/1048297
Nice holidays,

Martin Hochleithner

Hello,

here are the actual AquaTech NEWS and our new offer of the 2nd quarter 2005:

For a rational processing of fish ...

Scaling machines for many fishes

The robust, solidly constructed machines with belt drive offer perfect scaling technology, with their design (body in stainless steel, automatic time selector and control valve for reduced water consumption) and complete operational safety (auto-stop control, motor protection, restart protection). Scaling takes place at the bottom and sides of the machine and offers the advantages of short (approx. 3-5 minutes per scaling cycle), low-noise scaling cycles and reduced water consumption. The water used in the scaling process is accumulated, so that the fish are thoroughly washed and a soft cushion of water is formed. This provides a flexible support and ensures that the scaling action is very gentle (fishes are not exposed to heavy bumps or impacts). The auto-stop control automatically stops the machine when the loading lid, top lid or release flap is opened. Gentle release is ensured because the machine restarts slowly and the start button must be pressed and held down, which is an added safety feature. An automatic shut down with manual restart guards against automatic start-up after a power failure.
The scaling machines are supplied either with a karborundum drum for soft fish or small scales and with a round-hole drum for clams and hard fish or large scales. The machine is also available with a dirty water drain on the left-hand side (standard at the right side).

The following types are available as standard:

Filleting machines for splitted fillets

The transformation of fish into fillets offer an interesting value added profit margin and is directly depending with the filleting costs. This new generation of filleting machines now comes in different sizes, with dimensions suited to various fish sizes and species (Salmon, Trout, Charr, Whitefish, Perch, Pikeperch, Bass, Bream, Tilapia, etc.) permitting an efficient filleting of fish (performance: approx. 800-1.000 kg fish/h) with minimum loss of product and high yield production of 50-78 % (salmonids) of splited fillets. The yield is directly depending on the state of the freshness and consistency of the fish, its fat content and maturity, as well as the cut of the head (I-, C- or V-cut). The simple mechanic solutions based on rigorous geometric principles in combination with a sensitive system to the thickness of each fillet, allow the machine to process fishes of various sizes (from 0.1 to 6.0 kg) without setting changes. The typ number means the max. fish thickness between anus and dorsum in mm, which the machine can handle. The smart design and sturdy construction (made in stainless steel) insure a long life to meet high conditions and norms of hygiene. All machines work with 2 or 4 blades (and 1 or 2 electric 400 Volt motors), are efficient and easy to clean and maintainance. The deheaded and guttet fishes are loaded by hand into the machine. A 10-12 cm high transport belt carefully transferes (approx. 20 m/s) the fish to the round knive blades which run not paralell but axial. The blades cut the fillets and seperates the waste bones, thus saving over 70 % of the production time. The filleting machines are available with 2 or 4 blades eighter for the production of fillets with belly bones (ribs) or for the production of deboned fillets.

The following 2 blade types are available as standard:

The following 4 blade types are available as standard:

Skinning machines for all fish filets

This fish skinning machines are manufactured with the use of exclusive and high quality components and according to the newest technical and hygienic regulations. The are made of rust free stainless steel, the transport belts and rolls are made of plastic. Additional plates inside guarantee a very long live of the robust machines, which have no electronic parts which could become deffect. All machines are easy to use and very maintainance friendly, which saves additional costs.
All models work with an 230/400 V (50/60 Hz) motor and are equipped with a foot-switch, adjustable knives (the skinning thickness can be adjusted from 0 to 4 mm), turnable plate, stripper and water spray unit (except Typ 250). Types CF are equipped with a cog-roller (for fish with a tough or thick skinn) and types CS mit  knife- and cleaning-centrifuge (for fish with a soft or thinn skinn).
The Band-models are suitable for large quantities and guarantee highest security during working, because they are switched off if the cover is opened. They have a gelagerte and from outside adjustable pressure unit (opening height max. 90 mm), which adapts automatically to the filets and is available with different performance depending on the fish speices (soft wheels, hard roller for salmon or soft baloon). With the band-machines the filets can be eighter skinned with stump blade or also with sharp blade. At skinning with stump blade (silver skinning) nearly no waste is generated, at working with sharp blade (deep skinning), the skinning deepth can be adjusted from 0 to 5 mm. Optionally, the band-models can be equipped with special designed curved blads, which allow in one working process to skinn and remove the red-brown muscle segments elong the sides of the sensory canal from fresh or smoked filets completely which was one of the most difficult problem during normal skinning by hand. Additionally they have a removeable charging belt, and a forwarding belt is available as accessoire.

The following types are available as standard:

New Products:

Saturometer (Gas saturation meter) incl. probe, EUR 890,-
This new handheld saturometer (LxWxH: 200 x 62 x 32 mm) identifies gas super-saturation in water reliably to 200 hPa resp. mbar pressure difference, with an accuracy of 1 hPa. It works with a usual 9 V battery, with integrated capacity monitoring on the meter. On request the meter is also available with 1-9 V output (free with this offer). The gas bubble disease is very often present undetected and leads to significant damage in the fish stock. If fish are being exposed to oversaturation continuously, they will suffer from it no matter which gas contributed most to the supersaturation! In experiments it was proven, that a continuous charge with only low levels of supersaturation has a significant negative impact on the fish immune system. A fishstock infected with IPN (Infectious Pancreas Necrosis) produced losses of 10-15 % after 90 days whereas fish from the same stock epxosed to supersaturation showed a mortality rate of 65 %. The gas bubbles themselves cause a lot of direct damages like lesions and embolies. Those alone are lethal in some cases. But in every case they open the door for secondary infections which can not be repelled by a weakened immune system. Another typical sample is a trout breeder who reported fin rot and saprolegnia on the fish body. Measures showed a gas pressure of 45 hPa which equaled to 105 % gas saturation. It may not sound high but the pectoral fins were severely damaged by gas bubble lesions. The fin rot and fungus (Saprolegnia) were clearly produced by an undetected gas oversaturation.

Underwater Video System with Camera incl. Monitor and Cable, EUR 590,-
This system was specially developed for the use under water. Main part is a stable waterproof video camera with plastic cover (WxHxD = 40 x 98 x 150 mm, power consumption 0.2 A) and a fixed cable of 18 m length. Down to this water deepth the camera is waterproof, which is equipped with Infrared-LED (Light sensivity <0 Lux), which thus supplies clear images even up to 2 m distance and by complete darkness. A 5" (128 mm) b/w-monitor with a resolution of 520 lines and a frequency of 60 Hz displays that what the diagonal objective (opening angle 90 degree) of the camera with 1/3-CCD-Sensor under water "sees". The compact monitor (WxHxD = 152 x 168 x 220 mm, power consumption 10.5 Watt) has 2 camera inputs (Second camera as accessoire) and can be used at a temperatur of -15 to +60 degree C and a huminidy of 10-90 %. The supplied 4,5 Ah-Accu allows a mobile use of the system up to 3 hours. To charge the accu, it can be connected with the supplied adapter eighter to a 230 Volt circuit or a 12 Volt battery of a car or boat etc. As accessoire a camera support is available which can be used to fix it to a pole etc.

Options and Accessoire:
Second camera, EUR 190,-
Camera support, EUR 40,-

All prices in Euro ex works, VAT excl.

New Books: