 What is BS EN 60758 – Guidelines for use of synthetic quartz crystal about?  
BS EN 60758 is a European standard on synthetic quartz crystal that discusses specifications and guidelines for use for effective use of synthetic quartz crystal.
BS EN 60758 applies to synthetic quartz single crystals intended for manufacturing piezoelectric elements for frequency control, selection, and optical applications.
Who is BS EN 60758 – Guidelines for use of synthetic quartz crystal for? 
BS EN 60758 on guidelines for use of synthetic quartz crystal is useful for:
- Synthetic quartz crystal manufacturers
- Quartz device manufacturers
Why should you use BS EN 60758 - Guidelines for use of synthetic quartz crystal?  
Quartz crystal produced for optical applications is produced by many of the same suppliers manufacturing quartz for electronic applications. The equipment and methods to produce optical quartz are similar to those used in the production of electronic quartz.
Therefore, IEC 60758 serves as the proper basis for including addenda related to a quartz crystal for optical applications.
BS EN 60758 satisfies the requirements for the use of optical pickups, optical lowpass filters (OLPF), and wave plates for the digital single-lens reflex camera, monitoring camera, digital video camera, and optical communication module operating.
BS EN 60758 assists in meeting agreed-upon guaranteed quality level tests and ensuring that the crystals and quantities enumerated within them are appropriately representative.
BS EN 60758 provides guidelines for the use of synthetic quartz crystals for piezoelectric applications. As a result, effective management of growth processes assures consistency in forms and dimensions, as well as quality homogeneity. Conducted tests are almost non-destructive, less costly, and much quicker.
With compliance and obedience to BS EN 60758, you can efficiently measure the quality and balance your energy system.
What’s changed since the last update?
BS EN 60758:2016 supersedes BS EN 60758:2009, which is withdrawn. BS EN 60758:2016 includes some technical changes compared to BS EN 60758:2000. These include: 
- Order rearrangement and review of terms and definitions
- Abolition as a standard of the infrared absorbance coefficient α3 410
- Addition of the α value measurement explanation by FT-IR equipment in annexe
- Addition of the synthetic quartz crystal standards for optical applications
