1.99064
Buffer solution
(citric acid/sodium hydroxide/hydrogen chloride) tracable to SRM from NIST and PTB pH 4.00 (25°C) Certipur®
Synonym(s):
Buffer solution pH 4.0 (25 °C in H2O) (citric acid/sodium hydroxide/hydrogen chloride)
Select a Size
| Pack Size | SKU | Availability | Price |
|---|---|---|---|
| 30 x 30 mL | Check Cart for Availability | $158.00 |
About This Item
grade
certified reference material
Quality Level
product line
Certipur®
pH
4.0 (25 °C in H2O)
density
1.01 g/cm3 at 20 °C
application(s)
environmental
food and beverages
general analytical
industrial qc
pharmaceutical
format
mixture
storage temp.
15-25°C
General description
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
Features and Benefits
- Measured and qualified at an ISO/IEC 17025 and ISO 17034 accredited laboratory
- Traceable to secondary reference standard from NIST and primary certified reference standard from PTB
- Available as a ready-to-use solution in 30 mL sachets
- Accompanied with a detailed and batch-specific certificate of analysis (CoA) for an effective audit
- Product label follows the ISO Guide 31 and contains information about ordering number, article description, lot number, safety data, and expiry date
- Packaging material subjected to comprehensive stability studies as per ISO Guide 35
- An uncertainty of +/- 0.02 in the pH value at 25°C
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| format mixture | format mixture | format mixture | format mixture |
| product line Certipur® | product line Certipur® | product line Certipur® | product line Certipur® |
| grade certified reference material | grade certified reference material | grade certified reference material | grade certified reference material |
| application(s) environmental | application(s) environmental | application(s) environmental | application(s) environmental |
| pH 4.0 (25 °C in H2O) | pH 4.0 (25 °C in H2O) | pH 6.0 (25 °C in H2O) | pH 3.0 (25 °C in H2O) |
| Quality Level 300 | Quality Level 300 | Quality Level 300 | Quality Level 300 |
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Storage Class
12 - Non Combustible Liquids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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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Global Trade Item Number
| SKU | GTIN |
|---|---|
| 1990640001 | 04061838851093 |