Lab Filter Paper — Ceev, Nruab Nrab, Quantitative & Qualitative Types

1. Qib Hom & Daim Ntawv Thov

• Ceev lim ntawv: rau ceev pom thaum tuav precision yog tsawg tseem ceeb

• Nruab nrab (los yog "standard") lim ntawv: sib npaug ntawm ceev thiab tuav

• Qib zoo: rau kev sib cais dav dav (xws li precipitates, suspensions)

• Quantitative (ashless) qib: rau kev soj ntsuam gravimetric, tag nrho cov khib nyiab, kab kev txiav txim

2. Kev ua tau zoo & Cov khoom siv

• Tsawg tshauv cov ntsiab lus: minimizes keeb kwm cuam tshuam

• High purity cellulose: Tsawg fiber ntau tso tawm lossis cuam tshuam

• Uniform pore qauv: nruj tswj kev tuav thiab ntws tus nqi

• Zoo mechanical zog: khaws cov duab hauv lub tshuab nqus tsev lossis nqus

• Tshuaj compatibility: ruaj khov nyob rau hauv acids, bases, organic solvents (nyob rau hauv cov kev txwv)

3. Kev xaiv loj & hom

• Discs (ntau txoj kab uas hla, xws li 11 hli, 47 hli, 90 hli, 110 hli, 150 hli, thiab lwm yam)

• Cov ntawv (ntau qhov ntev, xws li 185 × 185 mm, 270 × 300 mm, thiab lwm yam)

• Rolls (rau kev soj ntsuam tas li, yog tias muaj)

4. Kev Pov Hwm Zoo & Ntawv Pov Thawj

• Ua raws li ISO 9001 thiab ISO 14001 cov txheej txheem tau lees paub (raws li nplooj ntawv thawj qhia)
  

• Cov khoom siv raw khoom raug tswj xyuas kom zoo

• Nyob rau hauv-txoj kev thiab zaum kawg kev soj ntsuam rov qab los xyuas kom meej tus qauv
  

• Cov khoom raug kuaj los yog ntawv pov thawj los ntawm cov koom haum ywj pheej los lav qhov tsim nyog rau kev siv hauv chav kuaj
  

5. Cov lus qhia txog kev tuav & khaws cia

• Khaws rau hauv qhov chaw huv, qhuav, thiab tsis muaj plua plav

• Tsis txhob muaj cov av noo ncaj qha lossis tshav ntuj ncaj qha

• Kov maj mam kom tsis txhob folding, khoov, los yog paug

• Siv cov cuab yeej huv si lossis tweezers kom tsis txhob nthuav tawm cov khoom seem

6. Cov ntawv thov kev kuaj mob

• Gravimetric thiab quantitative tsom xam

• Environmental and water testing (suspended solids)

• Microbiology (microbial suav lim)

• Tshuaj los nag thiab filtration

• Kev nthuav qhia ntawm cov tshuaj reagents, kab lis kev cai xov xwm