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样本管，直径80x300mm，1000ml。

https://www.velp.com/zh-cn/test-tube-80x300mm-alcohol-determin.aspxA00001083

HOW TO CHOOSE THE CORRECT TEST TUBE FOR YOUR DISTILLATIONS

https://www.velp.com/zh-cn/how-to-choose-the-correct-test-tube-for-your-analysis.aspxTo determine total nitrogen in low nitrogen liquid samples such as water according to the Kjeldahl method, where it is necessary to sum organic nitrogen (proteins, nucleic acids, urea, synthetic organic chemicals) and ammonia nitrogen , Jumbo test tubes are a convenient accessory. 1-Liter Test Tubes Applications : separation of hydrocyanic acid from wastewaters Sample volume : 200 mL [...]

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