薄層 はくそうクロマトグラフィーでしょう
hakusō kuromatogurafiideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 薄層クロマトグラフィー

1. Thin-layer chromatography, likely.; It will probably be thin-layer chromatography.

Polite
Presumptive
Conjecture