Sapphire 5.0

Brand Family Overview

DigiGuardĀ® aqueous and UV curable overprint varnishes protect and enhance the appearance of printed materials. Various grades are available for commercial print jobs; form, fill and seal packaging; and food contact applications.

See more DigiGuard products.


Designed as a primer for HP Indigo substrates to render them compatible to ink. It can be used on paper substrates.


Primer for use with HP Indigo press.

Performance Attributes

This product is used in many applications including the following:

ApplicationProperties Imparted
HP Indigo SolutionsApplicator - flexo / gravure/ roll, OEM - Indigo ws10000, OEM - Indigo ws5000, OEM - Indigo ws7000, Substrate - paper

See more products recommended for HP Indigo Solutions.
Physical Properties

These physical properties are typical but should not be considered specifications.

AppearanceTranslucent liquid
pH10.4 - 11.4
Percent Non-Volatile4.8 - 5.3

Site of Manufacture (and Product Code)

AUB (Q4310A.E)
SNG (Q4310A.S)

Application Data

Q4310A (Sapphire 5.0) can be applied via flexo or direct gravure systems. The recommended dry coat weight is 30 to 60 mg/mĀ². Use our Sapphire Indicator Solution to check quality of the coating. The anilox should be kept turning at all times to avoid premature drying of the solution. Cleaning with warm water, IPA or slightly acidic water is recommended. ISO Cup Viscosity - #3 Cup 25-31 sec. Do not dilute.