Made from specially selected cotton cellulose. Manufactured and tested specifically for chromatographic techniques. Also widely used in protein and nucleic acid blotting.- Cellulose Chromatography Paper, Grade 1 Chr Chromatography Strips, CRL, 11 x 21.3cm with 12 strips of 1.5cm, 1 Chr Sheet Divided into 15mm Lnes For Running up to 12 Samples in Parallel, 100/pk 14-21 Days