本(ben)儀(yi)器(qi)(qi)是(shi)根(gen)據GB/T1540-1989紙(zhi)(zhi)(zhi)和(he)(he)(he)紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)吸(xi)(xi)(xi)(xi)水(shui)性(xing)(xing)的(de)(de)測(ce)定(ding)(ding)(ding)法(fa)（可勃(bo)法(fa)）規定(ding)(ding)(ding)的(de)(de)基本(ben)參數和(he)(he)(he)要(yao)求而(er)設計的(de)(de)。此(ci)(ci)標準適用于測(ce)定(ding)(ding)(ding)各種紙(zhi)(zhi)(zhi)或紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)表面(mian)的(de)(de)吸(xi)(xi)(xi)(xi)水(shui)性(xing)(xing)。但不適用于準確評(ping)價(jia)紙(zhi)(zhi)(zhi)或紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)的(de)(de)書寫性(xing)(xing)能。紙(zhi)(zhi)(zhi)與紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)表面(mian)吸(xi)(xi)(xi)(xi)水(shui)量(liang)(liang)(liang)（Cobb）值：單位面(mian)積的(de)(de)紙(zhi)(zhi)(zhi)和(he)(he)(he)紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)在一定(ding)(ding)(ding)壓力(li)、溫度下，在規定(ding)(ding)(ding)時間(jian)內表面(mian)所吸(xi)(xi)(xi)(xi)收的(de)(de)水(shui)量(liang)(liang)(liang)，以g/㎡計。具體公(gong)式如下：C=（G2-G1）×100。式中(zhong)：C-可勃(bo)吸(xi)(xi)(xi)(xi)水(shui)值；G2-吸(xi)(xi)(xi)(xi)水(shui)后稱出之試樣質量(liang)(liang)(liang)；G1-吸(xi)(xi)(xi)(xi)水(shui)前稱出之試樣質量(liang)(liang)(liang)。紙(zhi)(zhi)(zhi)和(he)(he)(he)紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)吸(xi)(xi)(xi)(xi)收性(xing)(xing)測(ce)定(ding)(ding)(ding)儀(yi)是(shi)紙(zhi)(zhi)(zhi)和(he)(he)(he)紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)表面(mian)吸(xi)(xi)(xi)(xi)水(shui)性(xing)(xing)試驗(yan)(yan)的(de)(de)常規儀(yi)器(qi)(qi)，亦(yi)稱為紙(zhi)(zhi)(zhi)張表面(mian)吸(xi)(xi)(xi)(xi)收重(zhong)量(liang)(liang)(liang)測(ce)定(ding)(ding)(ding)儀(yi)。這種儀(yi)器(qi)(qi)采用吸(xi)(xi)(xi)(xi)收性(xing)(xing)試驗(yan)(yan)多(duo)種方法(fa)中(zhong)的(de)(de)可勃(bo)（Cobb）試驗(yan)(yan)法(fa)，因(yin)此(ci)(ci)也稱為可勃(bo)吸(xi)(xi)(xi)(xi)收性(xing)(xing)測(ce)定(ding)(ding)(ding)儀(yi)。

1.金屬(shu)圓筒與工作面(mian)均采用(yong)不(bu)(bu)銹鋼(gang)材料經(jing)久耐用(yong)不(bu)(bu)生銹。

2.儲(chu)水(shui)桶(tong)內設(she)置水(shui)線方便觀察桶(tong)內水(shui)量。