Name: Merck 109439 pH 7 Buffer Solution (Di-Sodium Hydrogen pHospHate/Potassium Dihydrogen pHospHate), Traceable To Srm From Nıst And Ptb pH 7.00 (20°C) Certipur® 1 L - Donanım Cihaz
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Merck 109439 pH 7 Buffer Solution (Di-Sodium Hydrogen pHospHate/Potassium Dihydrogen pHospHate), Traceable To Srm From Nıst And Ptb pH 7.00 (20°C) Certipur® 1 L

₺1.833 + KDV

MERCK 109439 pH 7 buffer solution (di-sodium hydrogen phosphate/potassium dihydrogen phosphate), traceable to SRM from NIST and PTB pH 7.00 (20°C) Certipur® 1 L
Catalogue Number	109439

Product Information
HS Code	3822 00 00

Physicochemical Information
Boiling point	109 °C (1013 hPa)
Density	1.01 g/cm3 (20 °C)
Melting Point	-5 °C
pH value	7.0 (H₂O, 20 °C)

Specifications
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

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