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Four simple steps to use the dyne pen correctly

Abstract: 文章介绍了正确使用达因笔的四个简单步骤,确保测试材料的表面张力测量准确。首先,实验前需要准备,包括阅读安全数据表、佩戴适当的PPE,并确保测试笔未过期且未被污染。测试步骤包括选择适当的达因笔,将笔尖浸透后在样品上画三次平行通道,评估第三次的效果。如果墨水在样品上保持湿润 3 秒以上,则需要换用更高或更低达因水平的笔进行重复测试,以确定材料的表面张力值。

Experiment preparation

Read the safety data sheet and wear appropriate PPE.

Use standardized testing procedures.

Never use obsolete pens or pens with contaminated nibs.

Always store test pens at room temperature.

Always perform testing in a clean, level testing area.

Make sure that the liquid in the test pen does not react adversely with the material being tested or leach into the material and cause it to swell.

Always test at room temperature and never in very humid environments.

Always test at least 3 different locations on the material sample.

Do not touch the area to be tested.

Test on a clean area of the material and never retest on the same area.

Four simple steps let you use the dyne pen correctly with pictures 1

How to use Dyne pen?

Four easy measurement steps:

  1. Select the dyne pen that you think will be lower than the test sample

  2. Press the tip firmly against the sample until the tip is saturated with the test fluid 

  3. Gently draw the pen over the surface in 3 parallel passages, each approximately 100mm long, ignoring the first 2 passages as they are used to rinse the tip. Only the third pass is evaluated.

  4. If the ink remains wet on the sample for 3 seconds or longer, repeat steps 2 and 3 with the next higher dyne level pen. If the last ink rolls up the bead in 1 second or less, repeat steps 2 and 3 with the next lower value dyne pen. If the ink bar remains for 1 to 3 seconds before losing integrity, the pen's dyne level is close to the value of the material


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