The ISO 1675:2022 standard specifies the method for determining Resin density using the Specific Gravity bottle method. The standard applies to various liquid Resins and describes the measurement of the mass to volume ratio of a sample at a specific temperature by the Specific Gravity bottle technology to determine its density. The updated version improves the instrument specification and adds information about the reference air and water density. This standard ensures the accuracy and conformity of Resin density determination and is widely used in materials science and plastics processing industries.