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Supelco

Certified sec. standard reference buffer solution

di-sodium tetraborate decahydrate, directly traceable to primary SRM from NIST/PTB pH(S) = 9.18₀ (25°C) Certipur®

Synonym(s):

di-sodium tetraborate decahydrate buffer solution, pH 9.2 Certified Secondary Buffer Solution

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About This Item

UNSPSC Code:
41116107
NACRES:
NA.25

grade

certified reference material

Quality Level

300

Agency

complies with DIN 19266

product line

Certipur®

pH

9.2 (25 °C in H2O)

bp

100 °C/1013 hPa

density

1.00 g/cm3 at 20 °C

application(s)

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

format

mixture

storage temp.

15-25°C

Related Categories

General description

The certified secondary standard reference buffer solution (di-sodium tetraborate decahydrate) is gravimetrically prepared from high-quality sodium borate in high-purity water. Its pH value is measured by differential potentiometry with two platinum hydrogen electrodes against primary certified reference materials from NIST & PTB. The pH is qualified using the 5-point calibration method, in accordance with DIN 19268, against certified primary reference standards as per DIN 19266.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.

Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Application

The buffer solution can be used to calibrate, qualify, and monitor pH measuring instruments and as a control for testing other buffer solutions.

Features and Benefits

  • Available in solution format in a secure 100 mL plastic bottle
  • Subjected to detailed stability studies as per ISO Guide 35
  • Relevant information on product label including order number, article description, lot number, expiry date and safety data, following ISO Guide 31
  • Accompanying comprehensive and batch-specific certificate of analysis (CoA) for an effective quality management system
  • Measured and qualified in an ISO/IEC 17025 and ISO 17034 accredited laboratory
  • Traceable to SRMs from NIST and primary certified reference standards from PTB

Analysis Note

pH-value: 9.180 - 9.186

Legal Information

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

12 - Non Combustible Liquids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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.

EU REACH SVHC Candidate List

CAS No.

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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