GLUMA Etch yog cov tshuaj tua kab mob raws li phosphoric acid. GLUMA Etch Etchants muaj nyob hauv ob daim ntawv thiab ob lub zog los muab cov kws kho hniav xaiv .GLUMA Etch 35 Gel siv lub zog ib txwm muaj 35% phosphoric acid. GLUMA Etch 20 Gel, nrog 20% phosphoric acid, muab kev kho kom zoo ntawm cov hniav txha hniav laus thiab cov hniav, uas ua rau poob qis ntawm cov qauv hniav thiab sib npaug sib zog.