國(guó)家計(jì)量技術(shù)規(guī)范規(guī)程制修訂《尿比重計(jì)校準(zhǔn)規(guī)范》實(shí)驗(yàn)報(bào)告2025年2月實(shí)驗(yàn)報(bào)告實(shí)驗(yàn)?zāi)康尿?yàn)證《尿比重計(jì)校準(zhǔn)規(guī)范》的適用性和可行性。實(shí)驗(yàn)地點(diǎn)驗(yàn)證實(shí)驗(yàn)均在實(shí)驗(yàn)室完成。環(huán)境條件實(shí)驗(yàn)過(guò)程中環(huán)境溫度均在（20±2）℃，相對(duì)濕度≤85%。實(shí)驗(yàn)儀器與實(shí)驗(yàn)設(shè)計(jì)在驗(yàn)證實(shí)驗(yàn)中，對(duì)金科利達(dá)儀器有限公司、華勤眾遠(yuǎn)儀器有限公司和AntonPaar等公司生產(chǎn)的6臺(tái)不同型號(hào)尿比重計(jì)進(jìn)行了驗(yàn)證實(shí)驗(yàn)，覆蓋了國(guó)內(nèi)家用和醫(yī)院臨床科室常用的刻度式和數(shù)顯式尿比重計(jì)類型。測(cè)量標(biāo)準(zhǔn)5.1METTLERTOLEDOXSR205DU電子天平測(cè)量范圍為0.01mg~220g，EQ\o\ac(○,I)級(jí)。5.2Fluke1524數(shù)字溫度計(jì)測(cè)量范圍（0～50）℃，最大允許誤差為±0.1℃。5.3GBW(E)060024氯化鈉純度標(biāo)準(zhǔn)物質(zhì)以氯計(jì)的質(zhì)量分?jǐn)?shù)為100.00%，U=0.02%（k=2）。5.4純水電阻率不小于18.2MΩ·cm（25℃）。5.5其他設(shè)備A級(jí)容量瓶若干，燒杯、攪拌器、滴管、鏡頭紙等。5.6比重標(biāo)準(zhǔn)溶液在環(huán)境溫度20℃下，用電子天平精確稱取氯化鈉純度標(biāo)準(zhǔn)物質(zhì)（NaCl，分子量58.44277），精確稱取純水（H2O，分子量18.0153）溶解，分別配置5種覆蓋各質(zhì)量濃度水平的氯化鈉溶液各1份，如下表所示。質(zhì)量濃度/%比重（20℃）NaCl（g）H2O（g）11.005340.5026749.7643321.012461.0124649.6105441.026802.053649.286461.041273.1238148.9396981.055894.2235648.57094實(shí)驗(yàn)結(jié)果6.1金科利達(dá)NS-40驗(yàn)證實(shí)驗(yàn)根據(jù)校準(zhǔn)規(guī)范的要求和方法，對(duì)數(shù)顯式金科利達(dá)NS-40進(jìn)行驗(yàn)證實(shí)驗(yàn)，驗(yàn)證后的結(jié)果如下表所示。表1NS-40溫度示值誤差校準(zhǔn)結(jié)果尿比重計(jì)/℃數(shù)字溫度計(jì)/℃溫度示值誤差/℃測(cè)量值平均值測(cè)量值平均值20.120.220.120.120.220.220.320.2-0.1表2NS-40比重示值誤差校準(zhǔn)結(jié)果質(zhì)量濃度水平比重測(cè)量結(jié)果示值誤差標(biāo)準(zhǔn)值尿比重計(jì)T123M1%1.005341.0061.0061.0061.0060.0012%1.012461.0121.0121.0121.012-0.0014%1.026801.0211.0211.0211.021-0.0066%1.041271.0291.0291.0291.029-0.0128%1.055891.0371.0371.0371.037-0.019表3NS-40比重重復(fù)性校準(zhǔn)結(jié)果質(zhì)量濃度水平比重測(cè)量結(jié)果重復(fù)性SD標(biāo)準(zhǔn)值尿比重計(jì)M123456T4%1.026801.0211.0201.0191.0201.0211.0211.0200.00086.2華勤眾遠(yuǎn)DR501驗(yàn)證實(shí)驗(yàn)根據(jù)校準(zhǔn)規(guī)范的要求和方法，對(duì)數(shù)顯式華勤眾遠(yuǎn)DR501進(jìn)行驗(yàn)證實(shí)驗(yàn)，驗(yàn)證后的結(jié)果如下表所示。表4DR501溫度示值誤差校準(zhǔn)結(jié)果尿比重計(jì)/℃數(shù)字溫度計(jì)/℃溫度示值誤差/℃測(cè)量值平均值測(cè)量值平均值20.220.220.120.220.220.320.320.3-0.1表5DR501比重示值誤差校準(zhǔn)結(jié)果質(zhì)量濃度水平比重測(cè)量結(jié)果示值誤差標(biāo)準(zhǔn)值尿比重計(jì)T123M1%1.005341.0041.0041.0041.004-0.0012%1.012461.0091.0091.0091.009-0.0034%1.026801.0191.0191.0191.019-0.0086%1.041271.0271.0271.0271.027-0.0148%1.055891.0351.0351.0351.035-0.021表6DR501比重重復(fù)性校準(zhǔn)結(jié)果質(zhì)量濃度水平比重測(cè)量結(jié)果重復(fù)性SD標(biāo)準(zhǔn)值尿比重計(jì)M123456T4%1.026801.0191.0181.0191.0201.0181.0191.0190.00086.3華勤眾遠(yuǎn)RHC-300ATC驗(yàn)證實(shí)驗(yàn)根據(jù)校準(zhǔn)規(guī)范的要求和方法，對(duì)刻度式華勤眾遠(yuǎn)RHC-300ATC進(jìn)行驗(yàn)證實(shí)驗(yàn)，驗(yàn)證后的結(jié)果如下表所示。表7RHC-300ATC溫度示值誤差校準(zhǔn)結(jié)果尿比重計(jì)/℃數(shù)字溫度計(jì)/℃溫度示值誤差/℃測(cè)量值平均值測(cè)量值平均值20.120.220.120.120.320.420.420.4-0.3表8RHC-300ATC比重示值誤差校準(zhǔn)結(jié)果質(zhì)量濃度水平比重測(cè)量結(jié)果示值誤差標(biāo)準(zhǔn)值尿比重計(jì)T123M1%1.005341.0031.0031.0031.003-0.0022%1.012461.0081.0081.0081.008-0.0044%1.026801.0181.0181.0181.018-0.0096%1.041271.0271.0271.0271.027-0.0148%1.055891.0351.0351.0351.035-0.021表9RHC-300ATC比重重復(fù)性校準(zhǔn)結(jié)果質(zhì)量濃度水平比重測(cè)量結(jié)果重復(fù)性SD標(biāo)準(zhǔn)值尿比重計(jì)M123456T4%1.026801.0181.0171.0161.0151.0171.0171.0170.00106.4華勤眾遠(yuǎn)HT312ATC驗(yàn)證實(shí)驗(yàn)根據(jù)校準(zhǔn)規(guī)范的要求和方法，對(duì)刻度式華勤眾遠(yuǎn)HT312ATC進(jìn)行驗(yàn)證實(shí)驗(yàn)，驗(yàn)證后的結(jié)果如下表所示。表10HT213ATC溫度示值誤差校準(zhǔn)結(jié)果尿比重計(jì)/℃數(shù)字溫度計(jì)/℃溫度示值誤差/℃測(cè)量值平均值測(cè)量值平均值20.220.220.120.220.420.420.320.4-0.2表11HT213ATC比重示值誤差校準(zhǔn)結(jié)果質(zhì)量濃度水平比重測(cè)量結(jié)果示值誤差標(biāo)準(zhǔn)值尿比重計(jì)T123M1%1.005341.0051.0051.0051.005-0.00032%1.012461.0101.0101.0101.010-0.0034%1.026801.0201.0201.0201.020-0.0076%1.041271.0301.0301.0301.030-0.0118%1.055891.0401.0401.0401.040-0.016表12HT213ATC比重重復(fù)性校準(zhǔn)結(jié)果質(zhì)量濃度水平比重測(cè)量結(jié)果重復(fù)性SD標(biāo)準(zhǔn)值尿比重計(jì)M123456T4%1.026801.0201.0191.0181.0181.0201.0211.0190.00126.5AntonPaar公司DMA5001驗(yàn)證實(shí)驗(yàn)根據(jù)校準(zhǔn)規(guī)范的要求和方法，對(duì)AntonPaar公司DMA5001進(jìn)行驗(yàn)證實(shí)驗(yàn)，驗(yàn)證后的結(jié)果如下表所示。表13DMA5001溫度示值誤差校準(zhǔn)結(jié)果尿比重計(jì)/℃數(shù)字溫度計(jì)/℃溫度示值誤差/℃測(cè)量值平均值測(cè)量值平均值20.120.020.120.120.120.220.220.2-0.1表14DMA5001比重示值誤差校準(zhǔn)結(jié)果質(zhì)量濃度水平相對(duì)密度測(cè)量結(jié)果示值誤差標(biāo)準(zhǔn)值尿比重計(jì)M123T1%1.005341.007181.007181.007181.007180.0022%1.012461.014301.014301.014311.014300.0024%1.026801.028651.028661.028651.028650.0026%1.041271.043161.043161.043171.043160.0028%1.055891.057701.057701.057711.057700.002表15DMA5001比重重復(fù)性校準(zhǔn)結(jié)果質(zhì)量濃度水平相對(duì)密度測(cè)量結(jié)果重復(fù)性SD標(biāo)準(zhǔn)值尿比重計(jì)M123456T4%1.026801.028651.028611.028751.028581.028551.028511.028610.000086.6AntonPaar公司DMA35驗(yàn)證實(shí)驗(yàn)根據(jù)校準(zhǔn)規(guī)范的要求和方法，對(duì)AntonPaar公司DMA35進(jìn)行驗(yàn)證實(shí)驗(yàn)，驗(yàn)證后的結(jié)果如下表所示。表16DMA35溫度示值誤差校準(zhǔn)結(jié)果尿比重計(jì)/℃數(shù)字溫度計(jì)/℃溫度示值誤差/℃測(cè)量值平均值測(cè)量值平均值20.120.020.120.120.120.220.220.2-0.1表17DMA35比重示值誤差校準(zhǔn)結(jié)果質(zhì)量濃度水平相對(duì)密度測(cè)量結(jié)果示值誤差標(biāo)準(zhǔn)值尿比重計(jì)M123T1%1.005341.00981.00951.00961.00960.0052%1.012461.01731.01721.01711.01720.0054%1.026801.03151.03171.03161.03160.0056%1.041271.04651.04671.04611.04640.0058%1.055891.06071.06051.06041.06050.005表18DMA35比重重復(fù)性校準(zhǔn)結(jié)果質(zhì)量濃度水平相對(duì)密度測(cè)量結(jié)果重復(fù)性SD標(biāo)準(zhǔn)值尿比重計(jì)M123456T4%1.026801.03151.03171.03161.03111.03101.03211.0315