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merck 109439 PH缓冲液

merck 109439 PH缓冲液

(di-sodium hydrogen phosphate/potassium dihydrogen phosphate), traceable to SRM from NIST and PTB pH 7.00 (20°C) Certipur

  • 品牌： merck millipore/ 默克
  • 型号： 1.09439.1000 缓冲液
  • 其他型号：
描述
产品目录编号109439

产品信息
HS代码3822 00 00

理化信息
沸点109 °C (1013 hPa)
密度1.01 g/cm3 (20 °C)
熔点-5 °C
pH值7.0 (H₂O, 20 °C)

GHS安全信息
储存类别10 - 13 其它液体及固体
WGKNWG 没有使水遭到危害
一次性28
水溶液:第D类.

储存和货运信息
储存于 +15°C 到 +25°C储存.

规格
pH-value (20 °C)6.99 - 7.01
Measured with a combined glass electrode after 5-point calibration according to DIN 19268 (expanded measurement uncertainty +/-0.01) with ref.buffer solutions according to DIN 19266, prepared with primary reference materials, at the accredited laboratory according to DIN EN ISO/IEC 17025.
Deviations of pH (ΔpH) at various temperatures:
 (0 °C)+ 0.13
 (5 °C)+ 0.07
 (10 °C)+ 0.05
 (15 °C)+ 0.02
 (20 °C)+/- 0
 (25 °C)- 0.02
 (30 °C)- 0.02
 (35 °C)- 0.04
 (40 °C)- 0.05
 (50 °C)- 0.05
Traceable to primary reference materials from:
NIST 189c, 188, 185h, 186 Ig, 186 IIg, 187e
PTB Ox-179/10,TA-212/11,PHT-232/12,PHO-243/12,BO-211/11
NIST: National Institute of Standards and Technology
PTB: Physikalisch-Technische Bundesanstalt