2021年9月5日 · Formerly the Jackson method of the candle was used to measure turbidity, using the JTU unit (Jackson Turbidity Units). Although they use different methods to measure turbidity, the value of the units JTU and NTU has been equated. So 40 JTU is roughly equal to 40 NTU. Therefore, equivalences between the values of the units are not necessary.

浊度计法原理：根据ISO 7027标准设计进行测量，利用一束红外线穿过含有待测样品的样品池，光源为具有890nm波长的高发射强度的红外发光二极管，以确保使样品颜色引起的干扰达到*小。 传感器处在与发射光线垂直的位置上，它测量由样品中悬浮颗粒散射的光量，微电脑处理器再将该数值转化为浊度值（透射浊度值和散射浊度值在数值上是一致的）。 浊度单位转换表. JTU（度） FTU（NTU） SiO2 (mg/l) JTU（度） 1 19 2.5. FTU (NTU) 0.053 1 0.13. SiO2 (mg/l) 0.4 7.5 1. …

The nephelometric method is calibrated using suspensions of formazin polymer such that a value of 40 nephelometric units (NTU) is approximately equal to 40 JTU. The preferred expression of turbidity is NTU. Turbidity's Significance to Human Health

浊度单位为JTU，1JTU=1mg/L的白陶土悬浮体。 现代仪器显示的浊度是散射浊度单位NTU，也称TU. FTU与NTU（浊度测定单位）一致. 显示全部. 1）jtu：由于水中含有悬浮及胶体状态的微粒，使得原来无色透明的水产生浑浊现象，其浑浊的程度称为浑浊度。 浑浊度的单位是用"度"来表示的，就是相当于1l的水中含有1mg.的sio2（或是非曲直mg白陶土、硅藻土）时，所产生的浑浊程度为1度，或称杰克逊。 浊度单位为jtu，1jtu=1mg/l的白陶土悬浮体。 2）ntu：现代仪器显示的 …

The Jackson Turbidity Unit (JTU) is a historical measurement done with the Jackson Candle Turbidimeter. To use this measurement tool, the tester pours water into a tube positioned over an open flame until the flame is no longer visible!

JTU，即杰克逊浊度单位是一个过去使用的单位，当时人们利用杰克逊浊度计目测浊度：将待测水样倒入一支竖直置于火焰正上方的玻璃管中，直到无法看清玻璃管为止。

High turbidity levels may be caused by soil erosion, runoff after heavy rain, growth of algae or disturbance of sediment by boats or aquatic animals. The unit of measurement for tubidity is the...

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It appears that 40 NTU is approximately equal to 40 JTU, but at other turbidities, the two units are not equivalent, and may or may not approximate each other. The main reason for this is that the two measurement units refer to different instruments and different calibration materials.

Range and sensitivity is 0, 20, 40, 60, 80, 100 JTU. The LaMotte Turbidity Test Kit tests for turbidity using a turbid-metric card used match clarity to your sample.