WHAT'S AT WHATMAN i\ t η1 ι,'!'"'''" of filter paper! H'hariaan continues to keep ahead of ever increasing lah< ci'tisistcnt development or ihc nui\i e.-inplete and specific line of laboratory filter paper iPc live Jit".'-' crudes, inch :;e\ii:ncd for a specific purpose. Λ smooth sur/acc version of W h a t m a n # 5 '•..hier-, retains ihc properties of *--cry high retention and slow filtration speed. This grade iisiers ui an unhcih vably rapid speed cojmp; ied with other iahorau.tr> iiucr papers but still has a good retention \ ,àuc and is therefore suitable for the filtration, ot coarse arui gelatinous précipitâtes. It is designed as a cpaiiitalve paper for fast ("titrations or as a semi-industrial ;rade for use ι it situations where the most rapid filtration is required. This n a hi;,·!) n e t strength paper uith medium retention and medium filter speed. It is similar in filtiation characteristics to, but i ie-o; expensive than. 'Λ batman - 2 . and W h a t m a n # 5 2 . I his is a hpeh >eci stren^rl, rapid filtering paper suitable for the fiit rat ion o! coarse and gelatinous precipitates and tor use in Buchaer funnels and other devices that would tend to break an ordmarx filler paper. It is similar in filtration characteristics to W h a t m a n -74, and Whatman # 5 4 . This is a lUirii ••·< ; urenprh paper with very high retention, slow filtering speed and semi-glazed surface to prevent fiber shedding. It is similar in filtration characteristics to W batman = 5 . and W h a t m a n # 5 0 . A variable through
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W H A T M A N FILTER PAPER
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