ITO glass is normally single side coated. How can we distinguish between the coated side and other uncoated side?
You only need a multimeter. Switch it to the resitive measurement mode. Touch the surface with the probes. Glass non-conductive, ITO conductive. If the ITO side is very sensitive. Take two copper wires, remove the insulation on both sides. The two "copper brushes" need to be connect to the multimeter with alligator clamps. The copper brush is soft and does not damage the surfaces so much.
Priyananda- You can check conductivity/resistivity using 4 probe analyzer, ITO side will be conductive and opposite side will be non conductive . this is the quick test you can do for cofirmation.
You only need a multimeter. Switch it to the resitive measurement mode. Touch the surface with the probes. Glass non-conductive, ITO conductive. If the ITO side is very sensitive. Take two copper wires, remove the insulation on both sides. The two "copper brushes" need to be connect to the multimeter with alligator clamps. The copper brush is soft and does not damage the surfaces so much.
Priyananda Konthoujam As Philipp Wysotzki states you only need a multimeter and 2 probes. You can look for (lack of) resistance. The 4 point probe is used to measure the conductivity of the film (in ohms/square). With practice you can see the interference colors of the film by tilting the glass somewhat. This applies well with low ohmage coatings (e.g. 5 ohms/square) which have a purple color when viewed at oblique angles.
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