Pipettes are manufactured from specially selected heavy wall machine drawn borosilicate accurate bore glass tubing they have precision formed jets and bevel ground ends to resist chipping. The graduation mark are either etched or screen printed or scored. The graduation mark are in durable white enamel or amber stain resistant to normal laboratory reagent and repeated washing. All the pipettes are individually measured and then marked. Due to uniformity of bore accuracy is ensured between any two readings. The Pipettes can be auto claved and if necessary can be flamed for sterilization. Pipette shown is MOHR type measuring pipette.