1、Ideal for replacing defective or broken touch screen LCD screens. 2、This is a true LOCA (Liquid Optical Clear Glue) Glue. 3、Kept in a syringe. The syringe will protect it from the hardening of conventional lights. 4、UV-curing UV glue must be cured with UV light, which will harden in about 30 seconds, but the recommended curing time is about 3 minutes. 5、Can also be used under sunlight, but it will takes more time. Features: 1. Ideal for replacing defective or broken touch screen LCD screens. 2. This is a true LOCA (Liquid Optical Clear Glue) Glue. 3. Kept in a syringe. The syringe will protect it from the hardening of conventional lights. 4. UV-curing UV glue must be cured with UV light, which will harden in about 30 seconds, but the recommended curing time is about 3 minutes. 5. Can also be used under sunlight, but it will takes more time. 6. Replace the faulty part and start using the unit again. Specifications: Model: LOCA Optical Glue TP2500F Capacity: 50 ml Material: Acrylic < Physical Properties Test method Appearance Visual Inspection Clear Viscosity Brookfield RVT, 25℃, 20 rpm, spindle #3 2300-2800mPa.s Density Uncured Adhesive at 25℃ 0.93g/cm3 Cure Condition UVA: 250 to 420 nm, 2500 mJ/cm2 Hardness ASTM D2240 E type18-30 UV Curing Depth Cured @100 mW/cm2 for 30s >3.0mm Volume Shrinkage Density Meter <2% UV Fixture Time Cured @100 mW/cm2 <30s Tensile Strength Glass-Glass Cross Bonding 0.30N/mm2 Dielectric Constant 1MHz 2.3~3.0 Refractive index Liquid Abbe at 25℃ 1.5 Refractive index Solid Abbe at 25℃ 1.51 %Transmittance At 550 nm 99.8% (>99%) %Haze ASTM D1003 0.13% (<0.3%) Yellow Index-b* ASTM D1925/C2 0.2 (<1.0) Package List: 1 * Glue Note: Take iPhone 4 as an example: 1. Clean the LCD screen area 2. Apply about 1.5g of UV glue to the middle of the LCD screen. 3. Make sure the area of the LCD screen is clean, except for the area where you use UV glue and prepare the front glass for glue. 4. Glue the front glass correctly. 5. After the UV glue is applied, the entire screen is exposed to ultraviolet light, and the UV glue cures for 3-5 minutes. If you are not a technician, please do not buy. Do not use fluorescent lamps when soldering. Fluorescence emits ultraviolet light, which is sufficient to slowly cure the glue. For longer working hours, work under normal light bulb or LED lighting. You can even put the lights far away if needed. Also, if you don't have UV light, don't forget that sunny days can also cure this glue. Just 3 minutes. Cloudy cloudy days may take longer.