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NIST191D

pH Standards

Name: pH Standards
Brand: SIAL

NIST^® SRM^® 191d, set of 191d-I + 191d-II

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About This Item

UNSPSC Code:

41116107

NACRES:

NA.24

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NIST188

Potassium hydrogen tartrate

Sigma-Aldrich

33114

Citric acid monohydrate

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Quality Level

100

form

powder

packaging

pkg of 1 bottle x 25 g; 1 bottle x 30 g

manufacturer/tradename

NIST^®

application(s)

general analytical

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General description

This Standard Reference Material (SRM) is intended for use in preparing solutions for calibrating electrodes for pH measuring systems. SRM 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 SRM 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. For more information, please refer to the COA and SDS.

SRM 191D_cert

SRM 191D_SDS

Other Notes

Please download a current certificate at nist.gov/SRM for current analytes and certified values.

Legal Information

NIST is a registered trademark of National Institute of Standards and Technology

SRM is a registered trademark of National Institute of Standards and Technology

related product

Product No.

Description

Pricing

NIST188

Potassium hydrogen tartrate, NIST^® SRM^® 188, pH standard

Pictograms

GHS07

Signal Word

Warning

Hazard Statements

H319

Precautionary Statements

P264 - P280 - P305 + P351 + P338 - P337 + P313

Hazard Classifications

Eye Irrit. 2

Storage Class Code

13 - Non Combustible Solids

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.