Brown reagent bottles are suitable for chromatography analysis of samples and sample preservation for light unstable, and can also be used for preservation of compounds samples in chemical, pharmaceutical industry and scientific research laboratories. Brown reagent bottles are suitable for chromatography analysis and sample preservation for light unstable samples, and can also be used for preservation of compounds samples in chemical, pharmaceutical industry and scientific research laboratories. Brown reagent bottles are suitable for chromatography analysis Sample bottles are mostly manufactured by borosilicate glass bottles, borosilicate glass is chemical inert glass, widely used in laboratory, especially in chromatography analysis applications. Sample bottles are mostly manufactured by borosilicate glass bottles, borosilicate glass is chemical inert glass, widely used in laboratory, especially in chromatography analysis applications. I-class glass ye siliki ku oksijɛn looi, ka boron ku sodium tɔ̈u. A tɛ̈n tɛ̈n tɛ̈n tɛ̈n tɛ̈n tɛ̈n tɛ̈n tɛ̈n tɛ̈n tɛ̈n tɛ̈n t