Isopropyl alcohol is often used in DNA extraction. It is added to a DNA solution in order to precipitate the DNA into a 'pellet' after centrifuging the DNA. This is possible because DNA is insoluble in isopropyl alcohol.
Four-lamp T5 light fixtures are great for mixed reef systems with soft and stony corals. Six-lamp or eight-lamp T5 fluorescent light fixtures are capable of sustaining higher light demanding SPS corals in reef aquariums with the proper reflectors using a combination of proper spectrum T5 aquarium light bulbs.5 Aquarium Light: Great for reef tanks and freshwater aquariums alike [Click here for more info.]. High output T5 aquarium light is a popular and versatile choice for illuminating your fish tank.
Also, older fluorescent bulbs were T12. Then, we had combination of magnetic ballasts and T12 bulbs. As I said, they lost to electronic ballasts and T8 bulbs. You simply may look at the numbers on the bulb to see if you have older T12, or newer T8 bulb.nother way, T8 bulbs are smaller in diameter (1 inch) in comparison to T12 (1.5 inches in diameter). To find the diameter simply divide the number by 8 and it gives you the diameter of the bulb. EX: T12 12/8=1.5 inches. As I said older T12 bulbs and magnetic ballasts come together.