A micron is 1/25,000th of an inch. A human hair is about 150 microns; the smallest thing that can be seen with the naked eye is about 10 microns. It is the largest particles, above 5 microns, that cause equipment problems and are what most filters are able to catch. However, 98% of the particles in the air are smaller than 1 micron. These "sub-micron" particles are not caught by most filters and can get through our bodies' natural defenses when inhaled.

A micron is 1/25,000th of an inch. A human hair is about 150 micros; the smallest thing that can be seen with the naked eye is about 10 microns. It is the largest particles, above 5.0 microns, that cause equipment problems and are what most filters are able to catch. However, 98% of the particles in the air are smaller than 1.0 micron. These "sub-micron" particles are not caught by most filters and get through our bodies' natural defenses when inhaled.

One micron is 1/25,000 of an inch; a 0.1 micron particle is 1/250,000 of an inch (human hairs are between 30 and 120 microns).

One micron is 1/25,000 of an inch. To understand just how small this is, consider that human hairs measure between 30 and 120 microns. Dust mite allergen measures from .1 to .3 micron and staphylococcus bacteria measures .7 micron. The size of a given particle helps to determine the degree of potential threat to human health. Particles ranging from .3 to .9 micron present the greatest health concern.

About 400 microns will fit inside an average size period in a sentence. A micron is one 300th the diameter of a human hair.

A micrometer (mi?CROM?e?ter) like this can measure distances to accuracies specified in micrometers (MI?cro?me?ters). Here, the accuracy of 0.002 mm is equal to 2 ?m. A micrometer is, of course, one millionth of a meter or a thousandth of a millimeter. The micron, symbol ?, was originally a special name for this distance, but the name and symbol were officially eliminated in 1968, so it's no longer correct to use microns.

When people become members of Urban Outings, they immediately are welcomed into the club by their fellow members, experiencing acceptance from their peers. After all, our members have joined the club because they want to meet people, so they are always friendly in welcoming new arrivals.

Group private lessons with friends or a partner are a great idea and work really well. Ask us for times and numbers and we will see what we can work out for you.

The best way to clean and wash small particles is with tangential flow. Our recommended membrane is from Spectrum Laboratories, Inc. in Rancho Dominquez, CA. You can reach them at 310-885-4600 or at the web site, www.spectrapor.com. The membranes are sold under the trade name MiniKros. These are available in a range of sizes appropriate for volumes ranging from milliliters to liters. Pore sizes are readily available at 0.1 ?M and these have been widely used by major diagnostics companies.

If the material looks or feels like a plastic product, it is the dip tube located in the hot water heater. Many plastic dip tubes deteriorate with time and must be replaced. It is recommended that a licensed plumber perform this task. This became a common problem when manufacturers began using plastic dip tubes some years ago. If the particles do not appear to be plastic and crumble easily in your hand, they are from mineral build up in the hot water heater.

The white particles are possibly pieces of the dip tube from your hot water heater. Several manufacturers of hot water heaters used polypropylene dip tube between 1993 and 1996. These dip tubes have a tendency to fail and break up. If you run out of hot water quickly, this is a sign your dip tube has failed. Another test is to clean the aerator and then run only cold water. If the particles do not appear, run you hot water and see if the particles appear.

Maybe. Doggie Day Care is for already social dogs to have fun. If you dog is shy but completely appropriate in their behavior, we may be able to assist them on learning how to play more. If your dog is shy and acts inappropriate to other dogs.. then no, day care is not the place for you. We encourage you to first come down for a tour. See the facility, see how safe the dogs are and how much fun they are having. Many dogs come to Doggie Day Care for many different reasons.