YSI 2700 SELECT, User Manual

Page: 145 / 165

A-2
Example Conversions
Beginning with 2.50 g/L dextrose, convert this to mg\L, then % and finally to mmol/L:
1. Multiply by unit conversion(s)
2. Cancel units common in “numerator” and “denominator”
3. Multiply numbers
? mg/L = 2.50 g/L
= (2.50 g/L)(1000 mg/g) = (2.50)(1000) mg/L = 2500 mg/L
? % (w/v) = 2.50 g/L
= (2.50 g/L)(0.1 L/dL) = (2.50)(0.1) g/dL = 0.250 g/dL
= 0.250 % (Note: g/dL is g/100ml or percent)
? mmol/L = 2.50 g/L
= (2.50 g/L)(1 mole/180 g)(1000 mmole/mole)
= (2.50)(1/180)(1000) mmole/L = 13.89 mmol/L