Why Sodium Vapour Lamp Used In Pharma Industry ??

[@ChandanSingh-kw2kh]

Very well posted

[@indal_66]

Bahut hi achha smjhaye sir ty

[@msd6178]

Thank you sir

[@chetandongre1631]

Any replacement for sox bulb ?

[@jesscorbin5981]

like silver nitrate?

[@vijayverma7602]

Very nice video sir ji

[@RamFajge]

Keep watching

[@rishabhthakur2737]

Air lock kya hote hai sir

[@Azharkhan-wo2lj]

Ty sir

[@chandraprakash1230]

Nice

[@RamFajge]

Thanks

[@santoshkamble6967]

Jai Maharashtra 😀😀😀

[@sahebfajage5163]

सुपर भाऊ

[@RamFajge]

दंडवत प्रणाम💐💐🙏🙏

[@santoshkamble6967]

Taklif ho Rahi hai Marathi mansala Hindi boltana mi Samju Shakto 😂😂