Is the Titrette a Class A burette?
Strictly speaking, no. Neither ASTM no ISO has yet created a “Class A” designation for bottletop burettes. The Titrette does, however, meet the error limits or volumetric tolerances required for Class A glass burettes per DIN EN ISO 385 and ASTM E287. So, while it’s technically not a “Class A” burette, the results obtained with a Titrette should be as accurate as one performed with a Class A glass burette of the same nominal capacity.