FOLLOW THE LEAD OF THE LEADERS: SPECIFY
SS Analytical Filter Papers . . . lowest
ash
- less t h a n 0.007%
... highest alpha cellulose - 97-98% ...strict uniformity - lot to lot The performance of your filter paper is uniform when you use S&S Analytical Filter Papers. You can duplicate your analysis confident that your filter paper will deliver the same results. For uniformity S&S Analytical Filter Papers are produced to rigid tolerances — in speed, retention, strength, pH. This assures identical filtration characteristics. For quality S&S purity is unduplicated. Leading laboratories know that S&S provides higher alpha cellulose content and lower ash. This S&S high purity and greater uniformity costs purchasing agents no more. There is n o price premium when you specify the finest. So follow the lead of the leaders. Specify "S&S"— American-made filter papers setting the standard of quality for the world. AVAILABLE
FREE
Sampler — contains a selection frOÏTi the «n^c* mrxcrci. of
For highest precision spix'ify Ν-λ: S Analytical
S&S quantitative and qualitative grades. Chromatography Sampler Kit — contains most popular grades. S&S papers are known for their strength and have less background. Mail postcard to: Department O, Carl Schleicher and Schuell Co., Keene,
Filter
Papers
N. H.
from your favorite laboratory supply
house
" K n o w n by t h e c o m p a n y t h e y k e e p — and t h e c o m p a n i e s t h e y s e r v e " CARL S C H L E I C H E R A N D S C H U E L L CO. K e e n e , New H a m p s h i r e
