该自定义透明度由TAPPI污垢评估表开发并基于该表，用于测量纸张和其他工业材料（如纺织品或塑料）中0.02至5.00平方毫米范围内的斑点、缺陷或夹杂物的大小。TAPPI试验方法T 564概述了这种透明度的使用说明。该图表可用于大量需要通过直接比较已知面积的磁盘或矩形来估计大小（面积）的应用中。应用可能包括但不限于测量印刷表面上的可见油墨飞溅，估计生物菌落的生长速度，透明塑料铸件和薄膜中的空气夹杂物，等。该图表不得用于估算污垢或其他有色斑点的等效黑色面积（EBA）（使用TAPPI污垢估算图表结合T 213或T 437或使用图像分析T 563进行EBA测量）。 这些图表是由杜邦CRR胶片制作的原始底片制成的。柯达/富士透明胶片处理器用于快速处理胶片。每张正片都是在柯达Contact 2000 CA7胶卷上制作的，使用一个带有NuArc光源的NuArc接触框和控制曝光的内置积分器。是什么让校准尺寸估算表如此特殊？这些图表适用于需要更精确测量的质量保证过程。每个图表有23个点，使用显微镜和行业测量标准（NIST可追踪分划板）进行校准。它是以一致性和精确性准备的。每个校准秒都有自己的数据表，该数据表提供了与图表上的增量（点）相对应的实际点测量面积（以平方毫米表示）。 每个经过校准的SEC都是单独准备的，并带有带有自己序列号的防篡改安全全息图，以确保用户的真实性。这对你意味着什么:你不再需要校准自己的图表。你可以节省时间和精力！您可以自信地知道，每一份经过校准的尺码估算表都是精心准备的，能够让您更好地为客户服务。

Developed from and based on the TAPPI Dirt Estimation Chart, this custom transparency is used to measure the size of spots, defects, or inclusions over the range of 0.02 to 5.00 square millimeters in paper and other industrial materials such as textiles or plastics. Instructions for use of this transparency are outlined in TAPPI Test Method T 564. The chart can be used in a large number of applications where there is a need to estimate a size (area) by way of a direct comparison to a known area disk or rectangle. Applications may include, but are not limited to, the measurement of visible ink spatter on printed surfaces, the estimation of the growth rate of bio-colonies, air inclusions in transparent plastic castings and films, etc. The chart must NOT be used to estimate the equivalent black area (EBA) of dirt or other colored specks (use the TAPPI Dirt Estimation Chart in conjunction with T 213 or T 437 or use image analysis, T 563, for EBA measurement).The charts are manufactured from an original negative produced on DuPont CRR film. A rapid-access processor using Kodak/Fujifilm chemistry is used for processing the transparencies. Each film positive is produced on Kodak Contact 2000 CA7 film, using a NuArc contacting frame with a NuArc light source and built-in integrators which control the exposure.What makes a Calibrated Size Estimation Chart so special?These charts are ideal for quality assurance processes that require more exact measurement.Each chart has 23 dots that are calibrated using both a microscope and the industry measurement standard (NIST traceable reticule). It has been prepared with consistency and precision.Each Calibrated SEC comes with its own data sheet that provides an actual dot measurement area (expressed in squared mm) to correspond with the increments (dots) on the chart.Each Calibrated SEC is individually prepared and bears a tamper evident security hologram with its own serial number to assure authenticity to users.What it can mean for you:You no longer have to calibrate your own charts. You can save time and effort!You can feel confident knowing that the each Calibrated Size Estimation Chart is prepared with care and precision to allow you to better serve your customers.