claim: Jack Dylan Grazer is a child of two people.
evidence: A volumetric pipette or bulb pipette allows extremely accurate measurement -LRB- to four significant figures -RRB- a volume of solution .. pipette. pipette. These pipettes have a large bulb with a long narrow portion above with a single graduation mark as it is calibrated for a single volume -LRB- like a volumetric flask -RRB- .. volumetric flask. volumetric flask. Typical volumes are 1 , 2 , 5 , 10 , 20 , 25 , 50 and 100 mL .. Volumetric pipettes are commonly used in analytical chemistry to make laboratory solutions from a base stock as well as to prepare solutions for titration .. analytical chemistry. analytical chemistry. titration. titration. ASTM standard E969 defines the standard tolerance for volumetric transfer pipettes .. ASTM. ASTM. The tolerance depends on the size  : a 0.5-mL pipette has a tolerance of ± 0.006 mL , while a 50-mL pipette has a tolerance of ± 0.05 mL .. pipette. pipette. -LRB- These are for Class A pipettes ; Class B pipettes are given a tolerance of twice that for the corresponding Class A. -RRB-. A specialized example of a volumetric pipette is the microfluid pipette -LRB- capable of dispensing as little as 10µL -RRB- designed with a circulating liquid tip that generates a self-confining volume in front of its outlet channels .. pipette. pipette