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Weights & Measures

Abbreviations for measures
gal or gals    = gallons                           g    = gram
O, pt or pts    = pints                           kg    = kilogram (1,000g)
oz or ozs    = ounces                           mg    = milligram (1/1,000g)
fl.oz    = fluid ounces                            mcg or µg    = microgram (1/1,000,000g)
lb or lbs    = pounds                             L or l    = litre (or liter in US)
st    = stones                                      cl    = centilitre (1/100 L)
gtts    = drops                                    ml    = millilitre (1/1000 L)
iu    = international units                        µl    = microlitre (1/1,000,000 L)
m or min    = minims                           meq or mEq    = Milliequivalent
hr    = hour                                        m    = metre (or meter in US)
min    = minutes                                 mm    = millimetre (1/1,000 m)
sec    = seconds                                 cc or cu.cm    = cubic centimetres (1/1,000 L)
ft    = foot or feet                               dr    = dram or drachm
gr    = grains                                      sc    = scruple
t or tsp    = teaspoon                           T or tbsp    = tablespoon

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UK/US Liquid Metric Conversions
1 gallon (gal)(US)    = 3785 ml                1 gallon (UK)    = 4546 ml
1 pint (pt)(US)    = 473.18 ml                  1 pint (UK)    = 568.26 ml
16 fluid ounces (US)    = 473.18 ml        20 fluid ounces (UK)    = 568.26 ml
8 fluid ounces (US)    = 236.59 ml          10 fluid ounces (UK)    = 284.13 ml
4 fluid ounces (US)    = 118.29 ml           5 fluid ounces (UK)    = 142.07 ml
1 fluid ounce (fl.oz)(US)    = 29.57 ml     1 fluid ounce (UK)    = 28.41 ml

1cc = 1g    = 1ml (approx)                       1 teaspoon    = 5 ml (approx)
10 minims    = 0.616 ml                          1 tablespoon    = 15 ml (approx)
15 to 16 drops ( gtts )    = 1 cc = 1ml      1 drop    = 1 minim approx
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Solid Metric Conversions
1 pound (avoirdupois)    = 453.592 g       1/2 grain    = 30 mg
1 pound (apothecary)    = 373.242 g       1/4 grain    = 15 mg
1 ounce (avoirdupois)    = 28.35 g          1/8 grain    = 8 mg
1 ounce (apothecary)    = 31.10 g           1/12 grain    = 5 mg
15 grains    = 1 g                                     1/100 grain    = 600 mcg
10 grains    = 600 mg                              1/150 grain    = 400 mcg
7 1/2 grains    = 500 mg                          1/200 grain    = 300 mcg
5 grains    = 300 mg                                1/250 grain    = 250 mcg
1 1/2 grains    = 100 mg                          1/300 grain    = 200 mcg
1 grain    = 64.79891 mg                        1 kilogram    = 2.2 pounds
1 pound    = 0.45 kilograms (kg)            1 stone  (14 pounds)  = 6.35 kg
1000 mcg    = 300 to 7000 iu (below)    1000 mcg    = 1 mg
1 scruple    = 1.2 g                                 1 drachm    = 28.8 g

Avoirdupois - a system of weights based on a pound of 16 ounces or 7000 grains.
Apothecary - a pharmacist, a druggist



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