According to various specialized membrane function demands, we have the test ability as follows:

1) P light reflection-ratio and transmissivity

2) S light reflection-ratio and transmissivity

3) Various-angle light reflection-ratio and transmissivity

4) Membrane surface damage limit

5) The even degree of heavy-caliber membrane surface

6) The chemical composition and proportion of the membrane surface

7) Tiny default of the membrane surfacePrecision:

a.The pre-deformity of transmission wave: <6 (P-V)

b. The pre-deformity of reflection wave: <4 (P-V)

c. Surface crudeness: ≤1.5nm

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