玻璃器皿校验规程.docx

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1、玻璃器皿校验规程1、适用范围本方法适用于常用玻璃器皿(滴定管、容量瓶、移液管、量筒)的校准，参照常用玻璃量器检定规程(JJGI96-2006)编制。2、技术要求2.1玻璃器皿外观应完整，无破损，应充分清洗干净、干燥并编号。滴定管必须分别按照酸、碱滴定管要求备好。2. 2常用玻璃器皿的容许误差如表506-1所示。常用玻璃器皿的容许误差容积(mL)容许误差(mL)滴定管移液管容量瓶量筒A级B级A级B级A级B级量入式量出式1+0.0100.0200.0070.015+0.0100.020一一20.0100.0200.0100.0200.0150.030一一3-一0.0150.030一-一-50.01

2、00.0200.0150.0300.0200.0400.050.10100.0250.0500.0200.0400.0200.0400.100.2015一-0.0250.050一一一一20一一0.0300.060一-一一250.040.080.0300.0600.030.060.250.50500.050.100.050.100.050.100.250.501000.100.200.080.160.100.200.51.0200一一-一0.150.30一一250一-一+0.150.301.0+2.0500一-一-0.250.502.55.01000一-一-0.400.805.0102000一-

3、一-0.601.201020注：玻璃器皿未标注级别的按B级处理。3、校准项目3. 1外观检查。3.2容积及刻度。4、校准环境及校准器具4.1校准环境：校准工作应在室内进行，环境温度为(25土5)C,相对湿度不大于85%,校准现场应洁净，周围无影响校准结果的振动、污染、腐蚀性气体。4.2校准器具：4. 2.1电子天平:量程200g,分度值0.001g.4.2. 2电子天平：量程2000g,分度值0.Olg.4. 2.3标准温度计：量程不小于50,精度0.1.5、校验规程4.1 外观检查：按照本方法2.1条要求进行目测检查。5. 2容积及刻度校准：容积不大于100mL的量具校准称量时选用0.OOl

4、g的电子天平；容积大于100mL的量具校准称量时选用0.Olg的电子天平。5.2.1移液管、容量瓶的校准：(1)将校准所要用的器具、蒸储水等提前放到校准环境中恒温；称量已经烘干并恒重的三角瓶质量。(2)往移液管或容量瓶中加入蒸储水至刻度线处。(3)将移液管或容量瓶中的蒸储水定量放入已经量过的三角瓶中，称量三角瓶和蒸储水的总质量；同时用标准温度计测量试验用蒸储水的温度。(4)根据校准所用蒸储水质量(In)和测定水温所对应的K(t)值(见表506-2、表506-3),计算所校准移液管或容量瓶在20时的实际容量V20=mXK(t)0同样方法测量3次，取平均值。5.2.2滴定管的校准：(D将校准所要用

5、的器具、蒸储水等提前放到校准环境中恒温；称量已经烘干并恒重的三角瓶质量。(2)往滴定管中加入蒸储水至最上面的“0”刻度线处，静置2min后调整水面至“0”刻度线处。(3)按照滴定管的最大量程分成五等份，依次放出蒸储水至三角瓶中，称量每次放出蒸储水和三角瓶的总质量；同时用标准温度计测量校准用蒸储水的温度。(4)采用5.2.1(4)相同方法确定所校准容积。同样方法测量3次，取平均值。5.2.3量筒的校准：(1)将校准所要用的器具、蒸储水等提前放到校准环境中恒温；称量已经烘干并恒重的量筒质量。(2)按照量筒的最大量程分成五等份,依次加入蒸储水至量筒对应的刻度线处,称量量筒和蒸储水的总质量；同时用标准

6、温度计测量试验用蒸储水的温度。(3)采用5.2.1(4)相同方法确定所校准容积。同样方法测量3次，取平均值。6、校准周期校准周期一般不超过12个月。7、参考文件JJF1071国家计量校准规范编写规则JJF1001通用计量术语及定义GBT/T8170数值修约规则与极限数值的表示和判定8、记录表格校验记录表常用玻璃量器衡量法Kt）值表（钠钙玻璃器皿）水温t()0.00.10.20.30.40.50.60.70.80.9151.002081.002091.002101.002111.002131.002141.002151.002171.002181.00219161.002211.002221.0

7、02231.002251.002261.002281.002291.002301.002321.00233171.002351.002361.002381.002391.002411.002421.002441.002461.002471.00249181.002511.002521.002541.002551.002571.002581.002601.002621.002631.00265191.002671.002681.002701.002721.002741.002761.002771.002791.002811.00283201.002851.002871.002891.002911

8、.002921.002941.002961.002981.003001.00302211.003041.003061.003081.003101.003121.003141.003151.003171.003191.00321221.003231.003251.003271.002391.003311.003331.003351.003371.003391.00341231.003441.003461.003481.003501.003521.003541.003561.003591.003611.00363241.003661.003681.003701.003721.003741.0037

9、61.003791.003811.003831.00386251.003891.003911.003931.003951.003971.004OO1.004021.004041.004071.00409注：钠钙玻璃体胀系数25X10-6-l,空气密度0.0022gcm3.常用玻璃量器衡量法Kt）值表（硼硅玻璃器皿）水温t（）0.00.10.20.30.40.50.60.70.80.9151.002001.002011.002031.002041.002061.002071.002091.002101.002121.00213161.002151.002161.002181.002191.002

10、211.002221.002241.002251.002271.00229171.002301.002321.002341.002351.002371.002391.002401.002421.002441.00246181.002471.002491.002511.002531.002541.002561.002581.002601.002621.00264191.002661.002671.002691.002711.002731.002751.002771.002791.002811.00283201.002851.002861.002881.002901.002921.002941.0

11、02961.002981.003001.00303211.003051.003071.003091.003111.003131.003151.003171.003191.003221.00324221.003271.003191.003311.003331.003351.003371.003391.003411.003431.00346231.003491.003511.003531.003551.003571.003591.003621.003641.003661.00369241.003721.003741.003761.003781.003811.003831.003861.003881.003911.00394251.00397L003991.004011.004031.004051.004101.004101.004131.004161.00419注：硼硅玻璃体胀系数IOXlo-6-1,空气密度0.0012gcm3.玻璃器皿校准记录表设备名称设备编号规格型号出厂编号生产厂家校准日期校准器具名称及编号校准环境仪器编号仪器容积读数(mL)瓶与水的质量(g)水的质量(g)水的温度()K(t)值实际容积(mL)容积差值(mL)备注校准校核日期