This specification covers liquid optical adhesive for use in bonding glass to glass or other transparent adherends. The adhesive shall be in liquid form and free of solvent in order to avoid bubble formation in the adhesive layer. Each component shall be completely reactive. The adhesive may be heat-, catalyst-, or radiation-cured. Voltatility, color, viscosity, foreign particle content, refractive index, stability, light transmission, glass doublet preparation, environmental test, and bond strength tests shall be performed in accordance with the specified requirements.

1.1 This specification covers liquid optical adhesive for use in bonding glass to glass or other transparent adherends.

1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information purposes only.

1.3 The following precautionary caveat pertains only to the test method portion, Section 6, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 6.1.1.