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Home Ready Made Buffers 20X Phosphate Buffered Saline, Ultra Pure Grade 20X Phosphate Buffered Saline, Ultra Pure Grade Storage Store at RT Catalog No Description Pack Size PB0354 – 1L 20X Phosphate Buffered Saline, Ultra Pure Grade, pH 7.4 1L PB0355 – 1L 20X Phosphate Buffered Saline, Ultra Pure Grade, pH 8.0 1L