Surface resistivity yog ib qho tseem ceeb qhia, feem ntau tswj nyob rau hauv qhov ntau ntawm 10^6 txog 10^9 ohms (zoo li qub dissipation cheeb tsam). Resistivity uas qis dhau los yog siab dhau yog qhov tsis tsim nyog. Zuag qhia tag nrho kuj (point-to-point resistance) yog tus qauv rau kev ntsuas tag nrho cov conductivity ntawm lub rooj zaum, thiab feem ntau yuav tsum tsawg tshaj li 1 × 10^9 ohms.
Cov khoom lag luam tshwj xeeb cov piv txwv muaj raws li hauv qab no: cov rooj zaum tawv tawv tawv muaj qhov ua haujlwm ntawm 10^5 ~ 10^7 Ω, thiab cov plaub hau antistatic -legged backrest cov rooj zaum muaj qhov ua haujlwm ntawm 10^4 ~ 10^6 Ω. Antistatic qhov siab- adjustable ua npuas ncauj rooj zaum yog nruab nrog pneumatic qhov siab hloov rods ntawm 140mm, 200mm, thiab 260mm.
Thaum yuav khoom, nws yog ib qho tsim nyog yuav tsum paub meej txog qib kev qhia tshwj xeeb raws li cov kev xav tau sib txawv rau cov khoom siv tshuaj tiv thaiv thiab plua plav ntawm qhov chaw ua haujlwm. Cov chaw ua haujlwm txheem ib puag ncig muaj qhov yuav tsum tau qis dua, thaum qib siab -chaw soj ntsuam thiab lwm qhov chaw zoo sib xws muaj cov kev xav tau siab dua.