Take for the amount of test materials, precision that set, place beaker, unless otherwise specified, may be added 40ml of water and hydrochloric acid solution (1-2) 15ml, and then set on a magnetic stirrer, stirring allows the dissolved, together with potassium bromide 2g insert platinum - platinum electrode, it will insert the solution of the following buret tip is about 2 / 3, using sodium nitrite titration solution (0.1mol / L, or 0.05mol / L) rapid titration, side drops while stirring, to near point, Burette tip surface will be presented with a small amount of water leaching cutting-edge, lotion, and solution and continue titration slowly until the sudden deflection of galvanometer pointer, namely, titration end point.

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Accuracy of the burette and pipette is the main factor which influences the uncertainty of measurement.

滴定管和移液管的準(zhǔn)確度是影響總堿度測量不確定度的主要因素影音先锋zyz。

This model is particularly designed for slender goods and especially applicable for cleaning burette and the other similar goods.

本型號(hào)是為那些細(xì)長形狀的物件量身定制的高效清洗器，尤其適用于清洗滴管等與其類似的清洗件999色综合。

Burette has 10 divisions in 1 cm 3, fill in 50 cm 3 in maximum.

滴定管是十分準(zhǔn)確的儀器黄色不卡av在线，它用來量度使用了的

The copy of the business license Leo Burette Co., to prove the legal person status of the company.

上海李?yuàn)W貝納公司的營業(yè)執(zhí)照副本九九热线精品视频16首页，證明該公司的法人資格

When making the air reading in the burette, the level bottle should be raised so as to bring the liquid in the burette and level bottle to the same level.

當(dāng)?shù)玫降喂苤械臍怏w讀數(shù)，水平瓶應(yīng)該升高亚洲免费视频一区，使滴管中的液體和水平瓶中的液體在相同的水平国产美女真人在线。

It is also advisable to invert the instrument and allow the gas that was released into the burette to be absorbed in the larger bottom bulb of the burette.

顛倒儀器是允許的，使氣體釋放到滴管黄色一二区在线播放，這樣使滴管的大球吸收CO2欧美自慰。

Close the Whitey valve (5056), open the burette cock (5005) and put approximately 100cc's of water in the level bottle (5047), elevating the same above the burette so as to allow the water to run down into the burette to the bottom of the calibrations.

關(guān)閉白色閥門(5056)，打開滴管龍頭(5005)9色蝌蚪，然后放出大約100ml的水平瓶(5047)中的水www久久99com，舉起滴管讓水流進(jìn)滴管到刻度的底部。

Raise the level bottle to fill the burette completely and close the burette cock.

防治溢出亚洲一级国产视频，腐蝕性汽水閥供應(yīng)附件在滴管頂端成年人视频网站免费。

Drops counting of capillary burette micro titration with polyethylene burette to carry on titration analysis, the apparatus is simple, small, cheap, easy to carry, and less reagent consumed, while the determination is fast and correct.

毛細(xì)滴管數(shù)滴微型滴定法以價(jià)格不足0.3元/支的聚乙烯塑料滴管為量器進(jìn)行滴定分析，不僅儀器結(jié)構(gòu)簡單国产免费一级小视频、小巧又粗又爽又黄的吃奶视频、價(jià)廉、攜帶方便欧美激情在线，而且試劑用量少一级黄色免费无码，測定簡便、快速黄片美女18岁、準(zhǔn)確亚州a综合图片一区二区。