What is the pH range of the solution?
a) 4.5 - 8.2
b) 6.0
c) 5.0 - 7.0
d) 7.0 - 9.0

What is the main chemical composition of the solution?
a) 85% water, 15% solutes
b) 90% water, 10% solutes
c) 95% water, 5% solutes
d) 98% water, 2% solutes

Which solutes are present in the solution?
a) NaCl, KCl, creatinine, uric acid
b) Urea, NaCl, creatinine, uric acid
c) Urea, KCl, creatinine, uric acid
d) Urea, NaCl, KCl, uric acid