Volumetric Glassware
Pyrex® Volumetrics are manufactured solely from pyrex borosilicate glass. MBL® volumetric products are manufactured from borosilicate and soda lime glass. Soda Lime glass is generally used for Class B Products.
Volumetric Accuracy and Inscriptions:
| Tolerance: | Class A/AS-Highest level of accuracy |
| Class B – General purpose work calibrated to a lower level of accuracy | |
| Standard: | The standard to which the product conforms |
| Graduation | Pyrex® and MBL® volumetric glass is graduated in ml in accordance withISO |
| IN | Calibrated to contain |
| EX | Calibrated to deliver |
| Blowout | Indication that last drop should be blown out of jet |
| Temp ◦C | All Pyrex® and MBL® volumetric glassware is calibrated at 20◦ degrees C |
| Certification: | All class A/AS works certified glassware bears a serial number for identification and traceability |
