Part III: Making a solution: A. For this portion of the lab, you and a partner will make a PBS solution needed for lab this semester. You will also use the PBS solution you make today to make a PBS-TX solution during our next lab meeting. When working with cells and preparing them for a procedure, you will need to have a few solutions on hand and they must be made with exact molarity and at exact a pH. DS Make Phosphate Buffered Saline (PBS): In 250ml ultrapure water dissolve, adjust pH to 7.2. In the blank provided, calculate the amount of grams of the salt listed you will need: 1.3M NaCl = a les 70mm Na2HPO4 = 30mm NaH2PO4 = IT tomto