Calculating with ppm (parts per million) in Two Easy Steps

Posted by By at 30 April, at 14 : 27 PM Print

Reading a hay analysis or generic female viagra offers serious approach to the troubles of female sexual puzzling over the ingredients in feed or supplements can be a chore, yet when considering particular elements—selenium, for example—some minor math can make a major difference to your horse’s health.

Feed tags and hay analysis often list ingredients as “ppm” or parts per million. Does this confuse you? You aren’t alone. The best way to think of ppm is as milligrams per kilogram (mg/kg) of feed advair diskus 250 price price advair diskus 100 50 order fluticasone (since a mg is a one millionth “part” of a kg). Therefore, when using mg/kg, you have to make sure you’re dealing with kg of feed (instead of lbs) in order to make your calculations.

Consider this example: Let’s say your hay contains 0.2 ppm (mg/kg) of selenium. How many mg of selenium does 10 lbs of looking for estrace? order estrace cream – best offers for estrace in our online drugstore. hay contain?

First, you need to convert the lbs to kg. Since there are 0.454 kg in one lb, make the conversion by multiplying lbs by 0.454. So, 10 lbs multiplied by 0.454 equals 4.54 purchase discount medication! buy dapoxetine online . official drugstore, dapoxetine cost india. kg (10 x 0.454 = 4.54).

Now you’re ready to calculate mg of selenium. Multiply 4.54 kg of hay by 0.2 ppm (or mg/kg) (4.54 x 0.2 = 0.91). That gives you 0.91 mg of selenium in your 10 lbs of hay.


Formulas to remember:

·        Convert lbs to kg: lbs x 0.454 = kg

·        Calculate to find mg: kg X ppm (or mg/kg) = mg


Permission to reprint this tip commercially is granted, provided prior notice is given to Dr. Getty at No editorial changes may be made without her approval.


Juliet M. Getty, Ph.D. is an internationally respected, independent equine nutritionist buy estrace tablets | usa canada uk | buy online without prescription. low prices, fast delivery and secure online processing. who believes that optimizing horse health comes from understanding how the horse’s physiology and instincts determine the correct feeding and nutrition practices. She is available for private consultations and speaking engagements.


Buy Dr. Getty’s comprehensive resource book Feed Your Horse Like a Horse at Dr. Getty’s website,, and have it inscribed by the author. Or buy it at Amazon (, Barnes and Noble ( or Books A Million ( The seven separate volumes in Dr. Getty’s topic-centered Spotlight on Equine Nutrition series are available at her website, where Dr. Getty offers special package pricing, and also at Amazon in print and Kindle versions.



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