I found a Water Quality Standards chart for a geothermal heat pump and one part of it says "Filtered fo maximum 800 microns [800mm, 20 mesh] size." So I would guess its 20.
£800 is $970.78
The sum of 720 and 800 is 1520.
As of 21st June 2009, £800 =$1319.48
Currently, 800 yen=$8.755
800 USD = 657.90 Pounds
.250 inches
18x18 what? 18 feet x 18 feet? 18 microns x 18 microns?
Viruses typically range from about 20 to 300 nanometers (nm) in size, which is equivalent to 0.02 to 0.3 microns (µm). Some larger viruses, like the giant mimivirus, can be up to 800 nm (0.8 µm). However, most viruses fall within the smaller range, making them significantly smaller than most bacteria.
To convert 800 into a fraction, you can simply write it as 800/1. This is because any whole number can be expressed as itself over 1. So, 800 as a fraction is 800/1.
800 meters = 0.8 kilometers. (A kilometer is 1000 meters.)
Multiply your 800 mg by 1,775 to get 1,42 g
800 sq feet = 74.32 sq metres.
800 square feet = 74.32 square meters.
You can't convert that.
There are 80 centimeters in 800 millimeters. You can convert millimeters to centimeters by dividing the number of millimeters by 10.
Millimeters don't convert to quarts (distance vs volume). 800 milliliters = 0.8453506 quarts.
One kilogram = 2.2 pounds so multiply kilograms x 2.2 to get pounds 800 kilograms = 1760 pounds