Koj tuaj yeem ntsuas qhov zoo ntawm cov txhuam txhuam txhuam los ntawm kev tshuaj xyuas yam xws li kov, qhov pom, thiab kev ua haujlwm. Nov yog cov txheej txheem tshwj xeeb:
Kov Test: Maj mam cheb tus txhuam hniav hla sab hauv ntawm koj txhais caj npab. High- cov bristles zoo zoo li mos li plaub, tsis muaj khawb lossis sib txhuam hnyav; low-zoo bristles hnov ntxhiab tawm ntawm daim tawv nqaij- qee zaum txawm zoo li cov ntawv xuab zeb.
Cov tsos mob thiab txiav txiav: Siab- cov bristles zoo muaj qhov zoo nkauj, du nrog kev hloov pauv ntawm cov lus qhia; qis- cov bristles zoo muaj qhov tsis sib xws thiab qhov ntev tsis sib xws, ua rau lawv nquag plhis thaum siv.
Elasticity thiab Density Test: Nias lub bristles maj mam thiab tso tawm. High- cov bristles zoo yog ntom thiab resilient, sai sai rov qab mus rau lawv qhov qub yam tsis muaj kev sib tsoo; qis- cov bristles zoo yuav zoo li voluminous tab sis tawg tam sim ntawd thaum nias, muaj cov hmoov tsis zoo, thiab ua rau cov hmoov poob thaum siv.
Pull Test: Maj mam rub rau ntawm ib qho me me ntawm bristles. High- cov bristles zoo yog ruaj khov thiab tsis tshua muaj; qis- cov bristles zoo tuaj tawm hauv cov pob nrog lub teeb rub, yooj yim lo rau koj lub ntsej muag thaum daim ntawv thov pleev xim thiab muaj peev xwm ua rau muaj kev tsis haum rau ntawm daim tawv nqaij.
Cov ntxhiab tsw thiab Craftsmanship Check: Ua raws li cov txheej txheem ntuj tsim tsis muaj pungent, gamey tsw thiab tsis los ntshav xim; qis-cov khoom zoo li ntuj lossis hluavtaws hluavtaws tuaj yeem khaws cov tshuaj tsw qab uas tuaj yeem ua rau tawv nqaij nrog kev siv sijhawm ntev -.
