Calc skills Flashcards
1
Q
what does 1% mean (mg/ml)
A
10mg in 1mL OR 1g in 100mL (for weight/volume calcs)
2
Q
what does 1 in 1000 mean
A
1g in 1000mL = 1mg in 1ml
3
Q
what does 1 in 10,000 mean
A
1g in 10,000mL
4
Q
how many mg is in 1mL of a 1% lignocaine solution?
A
1% = 10mg in 1mL so answer is 10mg
5
Q
express 250mcg/mL as a percentage
A
250mcg = 0.25mg –> 10/0.25 = 40 –> 1/40 = 0.025%
6
Q
what does 1% mean for w/w calcs
A
1g in 100g (for weight/weight calcs)
