1、DX单标线吸量管 DR单标线容量瓶 LT量筒 LB量杯如:HX-DR-100-005 表示“单标线容量瓶100ml序号005”2、术语和定义玻璃量器材质:通常采用钠钙玻璃或硼硅玻璃,用硼硅玻璃制成的玻璃量器应表“B”字样。标记:标准温度20,量入式用“In”,量出式用“Ex”,吹出式用“吹”或“Blow out”,等待时间“+xxs”,标称容量与单位“xxmL”,准确度等级“A或B”(未标注按B级处理)。3、原理:玻璃量器的校正就是通过称量量入或量出玻璃量器的水的重量,和一定温度下对应的水的密度,从而计算出玻璃量器的准确容积。不同温度中水的密度见表1。计算公式为:V20=m/w1+(20-t)
2、式中: V20标准温度20时的被检玻璃量器的实际容量,ml;m被检玻璃量器内所能容纳水的质量,g; w纯化水t时的密度,g/ml;被检玻璃量器的体胀系数,-1(钠钙玻璃的体胀系数为2510-6-1,硼硅玻璃的体胀系数为1010-6-1);t 检定时纯化水的温度,。表1 不同温度中水的密度表(单位g/L)t0.10.20.30.40.50.60.70.80.910999.699999.691999.682999.672999.663999.654999.644999.634999.625999.61511999.605999.595999.584999.574999.563999.553999.
3、542999.531999.52999.50812999.497999.486999.474999.462999.45999.439999.426999.414999.402999.38913999.377999.384999.351999.338999.325999.312999.299999.285999.271999.25814999.244999.23999.216999.202999.187999.173999.158999.144999.129999.11415999.099999.084999.069999.053999.038999.022999.006998.991998.9
4、75998.95916998.943998.926998.91998.893998.876998.86998.843998.826998.809998.79217998.774998.757998.739998.722998.704998.686998.668998.65998.632998.61318998.595998.576998.557998.539998.52998.501998.482998.463998.443998.42419998.404998.385998.365998.345998.325998.305998.285998.265998.244998.22420998.2
5、03998.182998.162998.141998.12998.099998.077998.056998.035998.01321997.991997.97997.948997.926997.904997.882997.859997.837997.815997.79222997.769997.747997.724997.701997.678997.655997.631997.608997.584997.56123997.537997.513997.49997.466997.442997.417997.393997.396997.344997.3224997.295997.27997.2469
6、97.221997.195997.17997.145997.12997.094997.06925997.043997.018996.992996.966996.94996.914996.888996.861996.835996.80926996.782996.755996.729996.702996.675996.648996.621996.594996.566996.53927996.511996.484996.456996.428996.401996.373996.344996.316996.288996.2628996.231996.203996.174996.146996.117996
7、.088996.059996.03996.001996.97229995.943995.913995.884995.854995.825995.795995.765995.753995.705995.67530995.645995.615995.584995.554995.523995.493995.462995.431995.401995.374、检定条件4.1环境条件:室温(205),且室温变化不得大于1/h;水温与室温只差不得大于2;校正介质为纯化水。4.2检定设备分析天平(分度值:0.1mg、0.01g),温度计(分度值:0.1),秒表(分辨力0.1秒)。5、计量性能要求滴定管、分度吸
8、量管、单标线吸量管、单标线容量瓶、量筒和量杯计量要求见表表2 滴定管计量要求一览表标称容量/mL12550100分度值/mL0.010.020.05容量允差/mLA0.0100.0250.040.10B0.0200.0500.080.20流出时间/s20-3530-4545-7060-9070-10015-3520-4535-7050-9060-100等待时间/s分度线宽度/mm0.3表3 单标线吸量管计量要求一览表0.0070.0150.0300.0400.0600.167-1215-2520-3025-3530-4035-455-1210-2515-3025-400.4表4 分度吸量管计量要求一览表流出式吹出式0.0084-103-6A级:B级0.40.0124-126-145-107-1711-21表5 单标线容量瓶计量要求一览表200250500100020000.030.150.250.400.600.060.300.500.801.20表6 量筒计量要求一览表2或5量入式1.02.55.0量出式2.00.5表7 量杯计量要求一览表1.53.06.07、容量允差在标准温度20时,滴定管、
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