Ask for Dr. H for technical questions

What is HCoating?
Novel chemical substances were developed to produce HCoating. The process is non-obvious, with no prior art in ophthalmic lens application. It is useful, having very little viscosity increase over time while maintaining all other features. HCoating adjusts and stabilizes coating viscosity by altering intra-molecular structures, a great technological advancement since the birth of solvent-free, inter-molecularly blended hard coating.

Why is stable viscosity crucial to a lens coating?
A film thickness of dry coating is dependant on the viscosity of the wet coating (liquid). Higher-viscosity liquids make a thicker dry film. Once the viscosity reaches a certain level, the dry-coated film gets thick enough to lose adhesion on the lens. Unfortunately, most solventless hard coatings have the problem of ever-increasing viscosity, among other issues.

Why is Intra-Molecular Altering better than Inter-Molecular Blending?
Intra-Molecular Altering (IMA) within a chemical is based on molecule design to get the desired structure and viscosity, stabilizing there. Inter-Molecular Blending (IMB) of different chemicals leads to either ever-increasing viscosity (e.g. competitor’s discontinued product) or too low viscosity to hide surfacing defects after curing (e.g. competitor’s non-tintable coating).

Why is HCoating better than Competition?
HCoating (HC, MT, SH, EH) is the only product of IMA technology. All other competitor’s coatings are the products of IMB technology.

How long does shipping take?
Standard shipping may take a few days to reach you. Overnight shipping is also available.

What are the shipping charges?
For a regular order, the S & H charges are already included in the price for those within continental USA.

How do I place an order?
Simply just click the 'Add To Cart' button to make a purchase. For large volume purchasers, place your orders with us via email (preferred), fax, or telephone. No P.O. boxes please; A signature is required for receiving.

How can I pay?
We accept credit cards, money orders, and business checks. Please allow at least 7 days for checks to be cleared. Please pay only after we offer you a quote.

How do I pay with credit card on line?
1. Click the "Pay Now" button

Can you deliver the package without requiring signature?
Yes, the package can be delivered without signature by your email request. However, you will be responsible for any possible issues.

Can I change the shipping address?
Yes, you can change the shipping address by email before the shipment is sent out.

Do I have to change anything in our coating machine to use HCoating?
HCoating is applicable in the existing lens coating machines and is also miscible and co-curable with most UV hard coatings. No changing is required, such as replacing filter or flushing system. You can start applying HCoating to lenses after simply mixing HCoating with your previous coating and running your coating machine for several minutes. Also you can pour back old coatings in your coater without other changes.

Why do I get streaks on the lens after mixing HCoating with our pre-existing coating?
Coatings in a coater thicken over time and running the machine will help incorporate the new coating. Streak appearances indicate that HCoating and the old coating have not yet been well-mixed. Keep running the machine until no streaks appear on a lens.

Why do I get a milky film after mixing HCoating with our pre-existing coating?
Milky film indicates a parameter difference between the two coatings. Generally speaking, using more than 50% of HCoating in a mix should avoid any incompatibility with other solvent-free hard coatings.

How do I use HCoating in a Gerber Coburn solvent-free coater?
To maintain machine function, you must keep HCoating full in the coating bowl before the coating level gets low enough to trigger a shut down.

Do you have a cleaning method to remove uncured (wet) HCoating?
Method A: Pick up a piece of tissue paper, soak it up with pure IPA (isopropyl alcohol), and then use the wet paper to wipe the coating off the lens. This may need to be repeated until the lens is free of coatings.
Method B: Smear some liquid soap detergent on the coated lens, then rinse the lens with tap water, or go through the water cleaning process in your coater.

What is your return policy?
Email us first. We guarantee good quality products upon arrival. Please get our authorization prior to returning any packages. Shipping charges are nonrefundable.