Ivoclar Vivadent IPS e.max ZirPress - Manual (Page 30)

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Removing the Reaction Layer
After fine divestment, the reaction layer formed during the press procedure is removed using IPS e.max Press Invex Liquid.
The procedure is carried out as follows:
– Pour the Invex Liquid into a plastic cup.
– Immerse the pressed object in the Invex Liquid and clean with ultrasound for at least 5 and max. 10 min. at most. Make
sure that the objects are covered with Invex Liquid.
– Next, thoroughly rinse the objects with running water and blow them dry.
– Carefully remove the white reaction layer with type 100 Al
2
O
3
at max. 1-2 bar (15-30 psi) pressure.
– Make sure that the reaction layer is completely removed (repeat the procedure, if necessary).
– If the reaction layer is not completely removed, bubbles may form, which subsequently may lead to bonding problems
and cracks in the layering ceramic.
– Replace the Invex liquid after 20 applications or after sedimentation of the liquid.
Remove the reaction layer with Invex and carefully clean with Al
2
O
3
at max. 1-2 bar (15-30 psi) pressure.
Warning
– The Invex liquid contains < 1% hydrofluoric acid.
– It is harmful when inhaled or swallowed and when it comes into contact with the skin. Furthermore, it is corrosive.
– Keep the container tightly sealed and store it in a well-ventilated place (acid cabinet).
– If the material comes into contact with the eyes, immediately rinse with copious amounts of water and see a physician immediately.
– In case of accidental contact with skin, immediately wash with plenty of water.
– Use suitable protective clothing, gloves and goggles when working.
– In case of an accident or physical discomfort, see a physician immediately. Bring the Invex label, if possible.
Disposal
– Neutralized the Invex Liquid before disposal!
– Use the IPS Ceramic Neutralization Powder to neutralize the Invex Liquid.
– For 50 ml Invex Liquid, approximately 3–4 g of IPS Ceramic Neutralization Powder are required
– Note: Strong foam development during neutralization.
– Carefully add the neutralization powder to the Invex Liquid in small portions until foam is no longer formed; then allow a reaction
time of 5 minutes.
– If larger quantities are disposed, check the liquid with litmus paper (must show an alkaline reaction).
– After the reaction time, pour the neutralized solution into the sink, flushing it with running water.