Pipet are two types, transfer and Molar. Transfer, or volumetric, pipets have an enlarged section and only one graduation mark. They will deliver the specified amount provided that the pipet is clean, it is held in a near vertical position during delivery. Content is made between the tip of the pipet and the wall of the receiving vessel, and drainage is allowed to occur for 5 seconds after the level of the liquid in the tip appears to have reached a static condition. Transfer pipets should be used where volumes must be measured with a high degree of accuracy. Mohr-style pipets are made from glass tubing of uniform bore and have multiple graduation marks. The small size of 5 ml capacity or less may be used to deliver small quantities of liquids quite accurately, but with 10 ml and larger sizes the bore and calibrations are such that delivery of accurate amounts cannot be expected. The Mohr pipet is used largely for measuring fractional volumes of 1 ml or for measurement of volumes when accuracy is of little importance.