Best Lab Equipment

Here are some more information for Light Sterilization:

Many instruments and measurement devices in the scientific laboratory, whether it is a research laboratory or a bioscience/medical laboratory, need purified water as a washing agent, reagent mixer, or rinsing agent. The necessity for pure water in these processes can be seen as common sense; contaminated water, or mineralized water can be hazardous to the testing procedures.

Pure laboratory water can be obtained by many methods. There are filtration systems that can result in 99% pure water for the laboratory. Distillation systems are also available to provide a non-mineralized water to be used in sensitive instruments. As can be imagined, mineral content in the rinse water for an automated chemistry analyzer would cause buildup of mineral deposits within the tubing and aspiration systems, which can lead to erroneous results, damage to the expensive probes, and quite possibly voiding the warranty

Distilled water for the laboratory is a frequently used rinse media, as the water is made from evaporative steam, which is condensed in a chamber to remove any possible contaminants such as minerals. This type of purified water is not guaranteed to be without bacteria, nor does it assure against other contaminants that may have condensed out of the original water batch. This is the cheapest form of purified water, so may be used for common cleaning procedures in the laboratory.

Deionized water is by far the most used pure laboratory water. It uses a chemical process to eliminate mineral salts from the water to be used. The resins involved in the filtration process are specially made filters, which use an ion-exchange method to remove these harmful minerals. Continuous deionization can be achieved with electrodeionization, which uses similar resins, but are electrically charged to remove particles from the flowing water. This method is the most commonly used, as fresh pure water is always available to the laboratory from the community source, without the need to purchase water by the drum.

Reverse-osmosis water purification is another method for supplying the scientific laboratory with pure water. This method is similar in osmotic filtration, yet it uses high pressures forced upon the semi-permeable membrane to filter out undesirable particulates. This method, along with a pre-filtration of a sediment filter, which can be a cotton-wound filter, can reduce the amount of contaminants in the water to be used by the laboratory.

Carbon filtration is another simple method for providing laboratory pure water. This filtration method uses a block of dense carbon to trap particulates measuring down to the micron sizes. It also can remove chemical molecules and bacteria. A good system forces water to be filtered through a very dense carbon block, resulting in very clean and clear water.

The best method to assure complete pure laboratory water is to combine two or more of the above processes in a continuous filtration process. Using distilled water first, sent through a carbon block filter, then a deionization process, the water would be most assuredly pure enough for the exacting standards of any laboratory. If sterile water is also needed, an ultraviolet light sterilization unit can be used in conjunction with the other filtration processes to eliminate any stray bacteria from the water system.

Laboratory pure water is needed in a variety of sensitive testing and experimental processes. These easy to set up methods can be the cost effective way to eliminate contaminants from your laboratory water.

Take a look at other laboratory water purification information from this author including laboratory water purification as well as laboratory water related material.

Led Lights: The Next Generation Of Home And Outdoor Lighting

Light Emitting Diode or LED lighting has been in existence for many years, mainly in niche applications like small trinkets and indicator lighting. However, due to LED lighting being highly energy efficient, not to mention technologically superior over other light sources such as incandescent and fluorescent lighting, it is forecasted to reach beyond electronic applications into commercial and home LED lighting as well. In a recent report by Global Industry Analysts it is predicted that the market for fluorescent and LED lighting could climb to $97 billion by 2010. The spike in growth would be mainly from construction and industrial development industries.

As more individuals become aware of the energy efficiency of LED lighting, the price of such items as LED bulbs will decrease in price. Currently, the price of one LED bulb is substantially higher than the price of incandescent or fluorescent lighting. However, the initial price for LED bulbs would more than pay for itself in the long run. On average, one incandescent 60-watt bulb lasts 1,000 hours whereas one 2-watt LED light bulb lasts 60,000 hours. Therefore, one would need to purchase 60 incandescent bulbs for every one LED light bulb.

Home LED lighting is a cut above the rest when it comes to energy efficiency. As compared to incandescent lighting, LED lighting wins hands down where energy consumption is concerned. For every 60,000 hours of usage, incandescent lighting uses approximately 3,600 kWh of electricity where LED lighting uses 120 kWh. Bottom line: energy efficiency equals a significant cost savings. LED lighting gives off directional light. Therefore, it is useful as a source of light for reading or spotlighting in the home. Its powerful light output also makes it great for outdoor floodlighting and path illumination. LED bulbs are now available that can replace most halogen or fluorescent light bulbs used in the home.

Although LED lighting may not be useful for all home lighting needs, replacing a few bulbs with LED bulbs would have a noticeable affect in the amount of electricity used.

LED light displays are already used in signs and videos in many indoor and outdoor sporting events and concerts. LED video displays and signs are often preferred because of their higher brightness, which is critical when people are viewing a sign or video from a long distance. Added advantages of LED video displays are their capacity to incorporate curves and 3-D design. This makes LED video displays technologically superior to currently available large screen displays. Research and developers in the consumer electronics space are eager to take advantage of this overwhelmingly useful technology in future products.

Other uses for LED lighting include LED flashlights and key chains, automobile taillights and interior lights, and LED based projection televisions. LED lighting is also being used in the military for LED flashlights that work with night-vision goggles, UV-LED canteen water treatment devices and the sterilization of surgical equipment.

With LED lighting being more energy efficient and technologically superior to many other light sources, numerous LED light applications are sure to evolve. Future generations can expect to consider LED lighting as the standard light source for most lighting applications.

~Ben Anton, 2007

About the Author

Learn more about how LED light displays and other
new LED Lighting applications
are revolutionizing the future on the DLK
indoor and outdoor LED products
website.

would you disinfect or sterilize "plastic tubing" for use in surgery?

i was thinking sterilization cause due to being a surgical instrument, but can we sterilse plastic in autoclave or UV lights?

Most plastic stuff comes already sterile from the manufacturer. There is the option of gas sterilization, if the tubing won't survive an autoclave.

Most surgical instruments are metal and ARE re-sterilized, at least in the OR's where I work. We don't reuse tubing.

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