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Packaging Technology Group
Master Specification for Beer Bottles International - China
I-C-200-F Date: 12/13/05
设备、材料
1. Split Beam Visible 分光光度计
2. \ thickness corrections. 相应计算瓶璧厚度修正的软件 3. 玻璃切割机（钻石头更好）或锯子。 4. 敲瓶锤
5. 点对点千分尺
6. 防护手套和安全眼镜
SAFETY PRECAUTIONS 1. Safety glasses should be worn at all times.
2. Protective gloves should be worn except when sample manipulation by bare hands is required. 安全防护
1．安全眼镜必须全程佩戴。
2．佩戴防护手套，样品要求裸手操作的情况除外。
METHOD 1. Four (4) samples will be taken from the upper half of the sidewall at 90° intervals around the circumference of the bottle. The area to be tested should be as flat as possible. Avoid mold seams,
blisters, obvious streaks, etc. The test swatch should be of sufficient size to cover the light path opening in the sample compartment of the spectrophotometer and of reasonably uniform thickness in the area of the light path.
1．从玻瓶上部瓶壁以90°交叉方向取4片样品，待测试区域应尽可能平。避开模缝线、气泡、明
显条纹等。 测试样本大小应该足够覆盖分光光度计样品池的光路，并且位于光路范围内的部分应厚度合适均匀。
2. Using the glass cutter or saw, score or cut the borders of a sample from the bottle as described in Item
1. If using a cutter, use the bottle \
Generally, it may be beneficial to section the bottle in large pieces, then remove the test swatch from one of the larger
pieces. (Example: remove the bottom and neck of a LNNR bottle leaving the cylindrical sidewall.
Score and break this piece until desired sample is obtained.) Make sure any chips along the edge of the swatch will not be within the instrument light path.
2．用玻璃切割机或锯子，从瓶子上如1所述划或切下样品边缘。如使用切割刀，使用巧平村“敲
瓶锤”沿刻痕从里面打破玻璃。
一般来说：切截成大片样品较好，然后从大片样品上取出测试样品。
3. For purpose of determining redness ratio, measure the thickness of one of the four test swatches using
the micrometer. Measurement should be taken at the point or area where the beam strikes the sample. The average of three readings should be obtained.
3． 为测定红色比率，用千分尺测量4片样品中的一篇厚度。 测量点应为光柱接触样品的点或区域。 应测试算得三个读数的平均值。
4. Place the sample in the Spectrophotometer light path according to instrument manufacturer’s
instructions. The glass swatch should be oriented such that the concave side of the glass is facing the source beam. If using a cuvet holder, the window of the holder should be completely covered by the
Page 17 of 13 Pages
Packaging Technology Group
Master Specification for Beer Bottles International - China
I-C-200-F Date: 12/13/05
glass and the glass should be perpendicular to the source beam. This procedure insures that the beam completely passes through the glass to obtain a true transmission reading and to minimize the amount of reflectance.
4． 按照仪器使用手册把样品放在分光光度计光路上。 样品放置方位为凹面朝向光柱。 如果用固定器，固定器窗口应被玻片完全覆盖，玻片应与光柱垂直。本程序确保光柱完全通过玻片以得到真实透光率读数最小化反射影响。
5. Take the transmittance reading in the normal manner. 5 以常规方读取透光值。
6. Record actual light transmission readings at T550 and T650 6． 记录T550 和 T650 下的实际透光值。
7. Determine redness ratio for the swatch on which thickness was measured. For redness ratio
calculation use the \ percent transmittance reading at the measured thickness to the percent transmittance reading at standard thickness (in most cases 3.18 mm).
7． 计算已经测量了厚度的样品的红色比率。 红色比率的计算用已测量厚度的透光读数百分比和标准厚度的透光百分比进行。
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Packaging Technology Group
Master Specification for Beer Bottles International - China
I-C-200-F Date: 12/13/05
32. Redness Ratio Graph
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