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pH Standards, (set of 191d-I + 191d-II)

Item no.

NIST-191d

Unit

set(2)

Shipment details

No Dangerous Good /not restricted

Price on request

Description

This Standard Reference Material (SRM®) is intended for use in preparing solutions for calibrating electrodes for pH measuring systems. NIST-191d consists of two components, each prepared to ensure high purity and uniformity: Sodium Bicarbonate, NaHCO3 (191d-I), and Sodium Carbonate, Na2CO3 (191d-II). However, neither SRM® component is certified for purity of substance. A unit of NIST-191d consists of 25 g of sodium bicarbonate (191d-I) and 30 g of sodium carbonate (191d-II), each contained in its respective clear glass bottle. A solution of molality 0.025 mol/kg with respect to both NaHCO3 and Na2CO3 is recommended for the calibration of pH measuring systems. /// Sample value(s) - please ask for current certificate.

Contents

Analyte	Concentration	Additional information
pH(S)	10,1786	10 Grad Celsius
pH(S)	10,1179	15 Grad Celsius
pH(S)	10,0632	20 Grad Celsius
pH(S)	10,0137	25 Grad Celsius
pH(S)	9,9683	30 Grad Celsius
pH(S)	9,9264	35 Grad Celsius

Analyte

CAS Number

Concentration

Unit

Additional information

Method

pH(S)

10,1786

10 Grad Celsius

pH(S)

10,1179

15 Grad Celsius

pH(S)

10,0632

20 Grad Celsius

pH(S)

10,0137

25 Grad Celsius

pH(S)

9,9683

30 Grad Celsius

pH(S)

9,9264

35 Grad Celsius

Miscellaneous

Certificate of Analysis (specimen)

Reference Material CoA specimen: for the current lot, please contact your customer service representative at info@labmix24.com

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Product data sheet

View all available product details e.g. description, analytes/parameters, CAS Number, concentrations/values, sales unit/product format, method, source, transport information

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NIST provides over 1300 Standard Reference Materials® as well as articles and practice guides describing the development, analysis and use of SRMs.

NIST Standard Reference Materials are used by analytical laboratories in industry, academia and government in order to facilitate commerce and trade and to advance research and development. The SRMs are produced by the engineering laboratory, the material measurement laboratory, and the physical measurement laboratory at NIST. They are available for chemical composition, physical properties, and engineering materials.