This involves a multiplication of 1000. This is because a microgram is 1/1,000,000 of a gram and a nanogram is 1/1,000,000,000 of a gram. Therefore there are 1000 nanograms in a microgram.
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Ppb means parts per billion. When you are talking about weight per volume, a gram is deemed equivalent to a millilitre. Micrograms per metre cubed means micrograms per 1000 litres. You will have to divide by 1000 to convert to micrograms per litre, giving you ppb.
Oh, dude, it's like converting microgram per gram to parts per million (ppm) is a piece of cake. All you gotta do is multiply micrograms per gram by 1000 to get parts per million because there are 1000 micrograms in a milligram. Easy peasy, lemon squeezy!
mcg is an abbreviation of microgram, so 1 mg = 1000 microgram = 1000 mcg.
ppm means mg per litre. mg/l means 100ug/dl. Therefore there are 10 x 10 micrograms per decilitre in ppm. In other words, 10ug/dl is 0.1 ppm.
Multiply the 8 oz by 28.3 to convert to grams. Multiply the sq yd by 1.19599 to convert to sq m