hach

Establish the Method to Test Low Concentration COD by HACH Device

利用Hach仪器开发低浓度COD的测试方法

Study on determination method of HACH COD detector and improvement

HACHCOD测定仪分析方法的研究和改进

Concentration nitrate - nitrogen with HACH method

高浓度硝酸盐氮HACH测定方法中试剂国产化的探讨

The manometric apparatus described in this section is the Hach Model 2171 .

本节所述测压仪为哈奈2171型。

Determination of Turbidity of Water by Hach 2100-N Scattering Turbidimeter

用Hach2100-N散射式浊度仪测定水中浑浊度

If the kits seem to catch on for arsenic tests , Hach may develop cheap test kits to measure fluorine levels as well .

要是砷的测试组受到欢迎的话，哈趣公司也许就会继续研发便宜的测试组来侦测氟。

Through of the improving , COD detector made by HACH Company is characterized by simple operation and reliable data , and has advantages as safety , less reagent used and less cost .

通过改进，HACH测定法是一种操作简单、数据可靠、试剂用量小、经济、安全的监测方法。

The daily quick determination of COD in wastewater can be achieved using HACH 45600 COD detector with self-made reagents instead of the special reagents of HACH .

利用HACH公司的45600型COD反应器，用自制药剂替代HACH的专用药剂，能满足日常废水监测分析的COD快速测定。

Results No significant differences ( P ￡ 3 / 40 2 ) were found in the data detected results obtained from the rapid detection kit , iodometry and HACH chromometer .

结果臭氧现场快速检测盒与碘量法、HACH比色仪的检验结果均无显著性差异（P>0.2）。

Measure of total phosphor content in Jialingjiang River ( upward and backward position in Nanchong ) with DR / 5000TM Spectrophotometer produced in HACH company .

采用美国HACH公司DR/5000紫外可见分光光度计，及其专用试剂测定嘉陵江（南充段）上游、下游水样中总磷含量。

This paper shows that , improvement the operation of U.S.A Hach COD detector . And improvement to reagent used in analyzing , substitutes the expensive imported reagent , it can reduce the cost of analyzing .

本文提出HACHCOD测定仪在实际使用中的操作和改进，并对其消解液进行了改进，替代了进口试剂，降低了监测成本。

The COD instrument made by HACH company of America is convenient in use . But its reagent mainly relys on import and the price is very high . Now by testing it again and again we developed a substitute reagent suitable for the instrument .

美国HACH公司制造的COD测定仪，使用方便，但试剂依赖进口且价格昂贵，我们经过反复试验，开发出仍适用于该仪器的替代试剂。

An 8-ounce steak is about the size and shape of a hockey puck , so I based my steak 's drag coefficients on those given on page 74 of The Physics of Hockey ( which author Alain Hach é actually measured personally using some lab equipment ) .

一块8盎司（约250g）的牛排大小形状和一个冰球差不多，所以我用《冰球物理学》（这本书的作者阿兰•阿什用一些实验室设备亲自测量了各种数据）第74页上的阻力系数来近似牛排的阻力系数。