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High temperature resistant
High temperature resistant
Explosion-proof ceramic
Explosion-proof ceramic
Highly corrosion resistant
Highly corrosion resistant
Extends equipment lifespan
Extends equipment lifespan

GP-21# Super-Grade Acid & Alkali Resistant Enamel Frit

GP-21# offers exceptional resistance to both acids and alkalis, with its alkali resistance being superior to that of GP-10#. It is suitable for use with all strong alkaline media at room temperature, as well as strong alkaline media at temperatures below 100°C and with a pH value of up to 13.


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Technical Parameters of

GP-21# Super-Grade Acid & Alkali Resistant Enamel Frit

* Only powder form can be delivered to overseas regions

Technical indicatorsUnitMethodIndicatorsTest Data
168-hour corrosion resistance to 20% boiling hydrochloric acidsg/(m².d)GB/T7989≤0.550.2-0.3
24-hour corrosion resistance to 0.1mol/L 80℃ sodium hydroxidesg/(m².d)GB/T7991.1≤2.750.5-1.0
Resistance to abrupt temperature difference variationsGB/T7991.3≥200200-220
Mechanical shock resistanceJGB/T7991.4≥220x10⁻³280-320
ColorCobalt blue
Applicable toReactors & stirring accessories


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