A barbital variety of these is commonly used to separate serum proteins, while a Tris variety of these can be used as a primary standard in analytical chemistry. Criteria for these were put forth by Norman Good, who also compiled a list of twelve of them. Their effectiveness can be determined by their namesake capacity, and carbonic acid and bicarbonate in human blood are 
A barbital variety of these is commonly used to separate serum proteins, while a Tris variety of these can be used as a primary standard in analytical chemistry. Criteria for these were put forth by Norman Good, who also compiled a list of twelve of them. Their effectiveness can be determined by their namesake capacity, and carbonic acid and bicarbonate in human blood are an example of one of these solutions. Their pH can be calculated by using pKa in the Henderson-Hasselbalch equation. For 10 points, name this type of solution which can resist changes in pH.
A barbital variety of these is commonly used to separate serum proteins, while a Tris variety of these can be used as a primary standard in analytical chemistry.
{Buffer} Solutions