三十(shi)萬(wan)級(ji)凈(jing)(jing)(jing)化車間標準空(kong)(kong)(kong)氣(qi)(qi)潔(jie)凈(jing)(jing)(jing)度是(shi)潔(jie)凈(jing)(jing)(jing)環(huan)境中(zhong)空(kong)(kong)(kong)氣(qi)(qi)含懸浮粒(li)子量的(de)多少的(de)程度。通常空(kong)(kong)(kong)氣(qi)(qi)中(zhong)含塵濃度低(di)則空(kong)(kong)(kong)氣(qi)(qi)潔(jie)凈(jing)(jing)(jing)度高(gao)，含塵濃度高(gao)則空(kong)(kong)(kong)氣(qi)(qi)潔(jie)凈(jing)(jing)(jing)度低(di)。按空(kong)(kong)(kong)氣(qi)(qi)中(zhong)懸浮粒(li)子濃度來(lai)劃(hua)分潔(jie)凈(jing)(jing)(jing)室及相關受控環(huan)境中(zhong)空(kong)(kong)(kong)氣(qi)(qi)潔(jie)凈(jing)(jing)(jing)度等(deng)級(ji)，就是(shi)以每(mei)立方米空(kong)(kong)(kong)氣(qi)(qi)中(zhong)的(de)允許(xu)粒(li)子數來(lai)確定其空(kong)(kong)(kong)氣(qi)(qi)潔(jie)凈(jing)(jing)(jing)度等(deng)級(ji)。三十(shi)萬(wan)級(ji)凈(jing)(jing)(jing)化車間標準以每(mei)立方米>=0.5μm微(wei)塵粒(li)子數目來(lai)設(she)定的(de)。