I want to use a light source having irradiance 100u E. per meter square per second in my research experiment .which type of bulb should i used?

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Henning Rehn

What do you mean by 100 µ E. ?

Hina Daud

It is the unit of illuminance..@Henning Rehn

Dear Hina, I do know irradiance (W/m2), illuminance (lx), and photosynthetic photon flux density (µmol/m2s), and can convert between them.

But I have no idea about 100 µ E.

Henning

100µmol/m2s is equal to 100µE/m2s ....yes you are right irradiane unit is W/m2 and its symbol is E..... would you convert it in watts or some common energy unit so i can buy it from market....i would like to say thanks for your time and effort also....@Henning Rehn

Dear Hina,

may I suggest that you consider a combination of blue and red LEDs.

Tools such as https://apps.osram-os.com/horticulture/ will help you to relate PPF and radiant flux to each other.