certiPUR®緩沖溶液都可以溯源到NIST和PTB的標準物質(zhì)。它們在默克自己獨立的校準實驗室采用符合電極和5點校準法（依據(jù)DIN19628方法）測定，配置標準緩沖溶液所有的原來依據(jù)DIN19266標準，誤差大值是±0.015個PH單位（PH10及以上：大±0.02個PH單位）。

產(chǎn)品料號 產(chǎn)品貨號 *產(chǎn)品名稱 ME1094321000 1.09432.1000 緩沖液pH 1.00 ME1094331000 1.09433.1000 緩沖液pH 2.00  ME1094334000 1.09433.4000 緩沖液pH 2.00  ME1094339010 1.09433.9010 緩沖液pH 2.00 ME1094341000 1.09434.1000 緩沖液pH 3.00  ME1094351000 1.09435.1000 緩沖液pH 4.00  ME1094354000 1.09435.4000 緩沖液pH 4.00  ME1094359010 1.09435.9010 緩沖液pH 4.00  ME1078271000 1.07827.1000 緩沖液pH 4.66 ME1094361000 1.09436.1000 緩沖液pH 5.0 ME1094371000 1.09437.1000 緩沖液pH 6.0 ME1094374000 1.09437.4000 緩沖液pH 6.0 ME1072941000 1.07294.1000 緩沖液pH 6.88  ME1094391000 1.09439.1000 緩沖液pH 7.00  ME1094394000 1.09439.4000 緩沖液pH 7.00  ME1094399010 1.09439.9010 緩沖液pH 7.00  ME1094601000 1.09460.1000 緩沖液pH 8.00  ME1094611000 1.09461.1000 緩沖液pH 9.00  ME1094614000 1.09461.4000 緩沖液pH 9.00  ME1094619010 1.09461.9010 緩沖液pH 9.00  ME1016451000 1.01645.1000 緩沖液pH 9.22 ME1094381000 1.09438.1000 緩沖液pH 10.0 ME1094384000 1.09438.4000 緩沖液pH 10.0 ME1094389010 1.09438.9010 緩沖液pH 10.0 ME1094621000 1.09462.1000 緩沖液pH 11.0 ME1990220001 1.99022.0001 緩沖液pH 12.0 ME1990224000 1.99022.4000 緩沖液pH 12.0