Another whatman filtering story

[Samurai-n]

I'm really confuced but someone told me that one 25mm/0,45um filter is only for about 30ml filtering stuff and some site is giving information that one is for 1,3 cm3(130ml)

https://new.fishersci.com/wps/portal/!ut/p/_s.7_0_A/7_0_K9/.cmd/ad/.ar/sa.PortletNAVAction/.c/6_0_AJ/.ce/7_0_9FH/.p/5_0_33V?ru=http%3A%2F%2Fprodwcsserver%2Fwebapp%2Fwcs%2Fstores%2Fservlet%2FProductImagesView&catalogId=29104&productId=699636&langId=-1&distype=3&isChemical=false&fromCat=yes&details=null&parent_category_rn=&selectedImage=-1&catCode=RE_SC&brCategoryId=null

"..Designed for easy filtration of hard-to-filter samples. Use 13mm diameter filters for samples up to 10mL; 25mm size for samples greater than 10mL. Each unit includes a stack of Whatman Multigrade GMF 150 (10:1µm) and Grade GF/F 0.7µm prefilters.

Polypropylene housing
Variety of membrane choices
Female Luer-Lok* inlet; male slip Luer outlet
Autoclavable at 121°C (250°F) at 15psi for 20 minutes
Maximum temperature, 131°C (267°F)
Filtration area: 1.3cm2
Pressure limit: 100psi All materials biosafe—pass USP Class VI requirements.."

that's the story.
Who can say-what filtering quantity is good?how many ml??

 

[BigRonWannabee]

Get the larger diameter filters, and youll be good for anywhere between 100-150ml. The filters are good for as long as you can pass gear through them. They will not turn "bad" after a certainm amount, they just clog and you physically cannot use them anymore.